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The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"9c29b424fdb725191b292eb8fc4fd979107209f6","_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"5.5.1","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"9.2.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.7","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.7"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"wct-browser-legacy":"0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.7","@polymer/iron-test-helpers":"^3.0.0-pre.7","@polymer/iron-component-page":"^3.0.0-pre.7","@webcomponents/webcomponentsjs":"^1.0.0"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.8_1518029785675_0.7479317824256657","host":"s3://npm-registry-packages"}},"3.0.0-pre.10":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.10","keywords":["web-components","web-component","polymer","a11y","input"],"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.10","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"contributors":[{"name":"The Polymer Authors"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"b7b91f314f13b012526835bc76fc0781da22eda6","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.10.tgz","fileCount":12,"integrity":"sha512-uXGTN+/0q31wzPsFpO+Kc9rlGRVVUMGwNjljyBK77pACLQ7ve85vNtGUPSO0hXCijHFWn67JYY7WJf3w/9ujWw==","signatures":[{"sig":"MEUCIQCQOA7RJZsp+tFJK4tZ3DiKNzZQNE8Vfy+u5I2C4GM8WwIgAxz68W5S+WPykxa26lgSCINFTsSOrBkpYQp9SXfE5yI=","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":24893},"flat":true,"main":"iron-a11y-keys.html","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"26d93ac95ddadd8be1c4f2fef1ab07c642d1f2d7","_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"5.4.1","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"8.2.1","dependencies":{"@polymer/polymer":"^3.0.0-pre.10","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.10"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"wct-browser-legacy":"0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.10","@polymer/iron-test-helpers":"^3.0.0-pre.10","@polymer/iron-component-page":"^3.0.0-pre.10","@webcomponents/webcomponentsjs":"^1.0.0"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.10_1519341317156_0.19569804966606275","host":"s3://npm-registry-packages"}},"3.0.0-pre.11":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.11","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.11","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"cf7c323bde20c499d042fe8ccf632b3d34471bc0","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.11.tgz","fileCount":12,"integrity":"sha512-mgbHjXbGV8KAogxzf1QBE6GYU05v9/LLxwDK9HGUwDp/NR/6kirkVDMEMCycf8WMaCzW1Tod1PooUQRyf5jb/Q==","signatures":[{"sig":"MEYCIQDcwPpaqWTBw4WF5HVJCFAw8OTjNbefRLBy4fSOnQBMRgIhALG3CYXAlVb8OwS7pb7WfzBQNJjy8FIYzhzix9yjPuZ1","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":27829},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"de1728b39457514623ba620689d3ac82f9d571d9","scripts":{"update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"5.6.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"9.7.1","dependencies":{"@polymer/polymer":"^3.0.0-pre.10","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.10"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","wct-browser-legacy":"0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.10","@polymer/iron-test-helpers":"^3.0.0-pre.10","@polymer/iron-component-page":"^3.0.0-pre.10","@webcomponents/webcomponentsjs":"^1.0.0","@polymer/gen-typescript-declarations":"^1.2.0"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.11_1520558230028_0.5139300613148527","host":"s3://npm-registry-packages"}},"3.0.0-pre.12":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.12","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.12","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"609fd99c11df29944696b1bf1452295f98366003","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.12.tgz","fileCount":13,"integrity":"sha512-+07sTTd8xjXV0bvl0UamrS2FxWgU51Ibd8KWlHoyRXNwRYQs684kfvjaP+Rq1RxOrY8oTmi8B4bZRL/kWTpX6g==","signatures":[{"sig":"MEUCIFiMO4E/gzYJfsg1BzsTUsZT4EJNPIo+xrqsWSXEeILFAiEArjBLiq0SljEnqBhPy7RVVCCXtKcLS0yfHKk2Jo1O0o4=","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":28458},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"ce49b2e2bda77f770c6560fc85d25b37ed3907ee","scripts":{"update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"5.5.1","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"9.2.0","dependencies":{"@polymer/polymer":"3.0.0-pre.12","@polymer/iron-a11y-keys-behavior":"3.0.0-pre.12"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","wct-browser-legacy":"0.0.1-pre.11","@polymer/iron-demo-helpers":"3.0.0-pre.12","@polymer/iron-test-helpers":"3.0.0-pre.12","@polymer/iron-component-page":"3.0.0-pre.12","@webcomponents/webcomponentsjs":"^1.0.0","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.12_1521737793589_0.3513007736761269","host":"s3://npm-registry-packages"}},"3.0.0-pre.13":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.13","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.13","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"66e3d28cb8222cbb22f7822935fb0b890ad148e5","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.13.tgz","fileCount":13,"integrity":"sha512-/yVKzXjRmm49WyKZtsOwQQikvi6XAyse6V1ozjjDNRRIInd4+W50eAVCRBTiX36aq1mibDhbKcQ/fdqOQwpl6A==","signatures":[{"sig":"MEQCIC8YsGpzZrssumLdQKnLWmjcdpeai2e0Mvursh4K4x96AiA9TjRDJ/m7zR36ymYJqhIUGG4MjYWdIC92wmnlZ+1ZTw==","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":28583,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\nr1YN\r\n=BX3R\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"077a0da0ce3aa278b788767ac2eae046690b5d44","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"9.8.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.13","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.13"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","webmat":"^0.2.0","wct-browser-legacy":"^0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.13","@polymer/iron-test-helpers":"^3.0.0-pre.13","@polymer/iron-component-page":"^3.0.0-pre.13","@webcomponents/webcomponentsjs":"^2.0.0-0","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.13_1525215391027_0.22551274001176003","host":"s3://npm-registry-packages"}},"3.0.0-pre.14":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.14","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.14","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"1172d28bac8468fabd4fa46a6a1ba146cf90dc38","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.14.tgz","fileCount":13,"integrity":"sha512-MIdZrW7Uals5NXgc3Wbw/schI/KmcJPbId7/PrIH1PAVbAKpbJmSQCAKvlFRGFAr5Vklk0wl4AgWjYbPCq7VuQ==","signatures":[{"sig":"MEYCIQDe+tMbQjOjWq1yPXM9lzpHF8QQIeyunnGEcuARP8XsdQIhAJP11lIZGtasl9dPsf/7hApNAUO/hXin1ooPLMywjLQG","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":28616,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\n1Bfp\r\n=uKGn\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"a400fa318be294dbad9e2811b7146af443fea16d","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2"},"_nodeVersion":"9.8.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.13","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.14"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","webmat":"^0.2.0","wct-browser-legacy":"^0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.14","@polymer/iron-test-helpers":"^3.0.0-pre.14","@polymer/iron-component-page":"^3.0.0-pre.14","@webcomponents/webcomponentsjs":"^2.0.0-0","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.14_1525221413550_0.7208288141200296","host":"s3://npm-registry-packages"}},"3.0.0-pre.15":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.15","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.15","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"2eaa788b1adcfe6d0c54b72c66ed7179ed0c93c3","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.15.tgz","fileCount":14,"integrity":"sha512-9c9TI4110KzYYYWInBVIxRo9Qi8R/EVHeLDmW1o5FT3WqbYWziPiBkYq00KceRqov0EKOD3YR0MKxvRaXaj6Yw==","signatures":[{"sig":"MEYCIQC/v5ibKmoLn5zK0PS1izOIeUiJFvfEDAqFWsANjUkuhwIhAKP+p7zfkcWGMu6bFktTgCDf6gz2qC6b0DoTQCYsNqkP","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":30371,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\n3XX2\r\n=SRKy\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"ed13edb1dd5f8ea35730e62634d40cd64af71136","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2","@webcomponents/webcomponentsjs":"2.0.0-beta.2"},"_nodeVersion":"9.8.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.13","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.15"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","webmat":"^0.2.0","wct-browser-legacy":"^0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.15","@polymer/iron-test-helpers":"^3.0.0-pre.15","@polymer/iron-component-page":"^3.0.0-pre.15","@webcomponents/webcomponentsjs":"^2.0.0-beta.2","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.15_1525294412624_0.07920239592818734","host":"s3://npm-registry-packages"}},"3.0.0-pre.16":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.16","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.16","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"aed0ed17e3a2f5b22208c7cff95fa9da8a09c5d4","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.16.tgz","fileCount":14,"integrity":"sha512-Ts1dMi+3SxJCykaoMrFYq3V9q8W41iG/DpgpWOUH2Cpl4c+QJBaBrICE7Wy8WwtifC3rBrjYo7/FXf7gzRFz+g==","signatures":[{"sig":"MEUCIH18rsuIDoNVwYZXjnaPW2jo3D/Op3jp9vyvOaOiP3HQAiEA/NnjsPYaPQfV71+0L8/gKCod2v5CnRP3WYOex/j0gjE=","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":30371,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\nJNzu\r\n=TpBL\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"77d1a07ec3ccb10184a01e0de2b2b2edb1acfd6a","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2","@webcomponents/webcomponentsjs":"2.0.0-beta.2"},"_nodeVersion":"9.8.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.13","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.16"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","webmat":"^0.2.0","wct-browser-legacy":"^0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.16","@polymer/iron-test-helpers":"^3.0.0-pre.16","@polymer/iron-component-page":"^3.0.0-pre.16","@webcomponents/webcomponentsjs":"^2.0.0-beta.2","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.16_1525465061974_0.5314868230645395","host":"s3://npm-registry-packages"}},"3.0.0-pre.17":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.17","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.17","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"6568e5c467930028c6043959ba646bb07703bf37","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.17.tgz","fileCount":14,"integrity":"sha512-fpkrjVfXPi4TGHGKznSQ3WkLzZQPsnOXiDzk2tj/1+O1ClqkPkcwsG/VsG3lylQDygjoqSosT93XgElFxRGVRw==","signatures":[{"sig":"MEQCIGhjUO2k4KBymsYjTJ9QqsEL81Dt8Y5+7r1cf5DW9iD7AiABbQsPQ0ZosDQXYsinlARSDuFpQsWDh7Qo73yS6k7fhQ==","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":30425,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\ngKVC\r\n=nT5Z\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"1810c6417d9028958091bd0b7f18f613544c5b57","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","directories":{},"resolutions":{"samsam":"1.1.3","inherits":"2.0.3","type-detect":"1.0.0","supports-color":"3.1.2","@webcomponents/webcomponentsjs":"2.0.0-beta.2"},"_nodeVersion":"9.8.0","dependencies":{"@polymer/polymer":"^3.0.0-pre.13","@polymer/iron-a11y-keys-behavior":"^3.0.0-pre.17"},"_hasShrinkwrap":false,"readmeFilename":"README.md","devDependencies":{"bower":"^1.8.0","webmat":"^0.2.0","wct-browser-legacy":"^0.0.1-pre.11","@polymer/iron-demo-helpers":"^3.0.0-pre.17","@polymer/iron-test-helpers":"^3.0.0-pre.17","@polymer/iron-component-page":"^3.0.0-pre.17","@webcomponents/webcomponentsjs":"^2.0.0-beta.2","@polymer/gen-typescript-declarations":"^1.2.1"},"_npmOperationalInternal":{"tmp":"tmp/iron-a11y-keys_3.0.0-pre.17_1525756076119_0.29950507656716385","host":"s3://npm-registry-packages"}},"3.0.0-pre.18":{"name":"@polymer/iron-a11y-keys","version":"3.0.0-pre.18","keywords":["web-components","web-component","polymer","a11y","input"],"author":{"name":"The Polymer Authors"},"license":"BSD-3-Clause","_id":"@polymer/iron-a11y-keys@3.0.0-pre.18","maintainers":[{"name":"polymer","email":"admin@polymer-project.org"}],"homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","bugs":{"url":"https://github.com/PolymerElements/iron-a11y-keys/issues"},"dist":{"shasum":"e69c22f4147d481a78df4211fdb7ab793438d6eb","tarball":"https://registry.npmjs.org/@polymer/iron-a11y-keys/-/iron-a11y-keys-3.0.0-pre.18.tgz","fileCount":13,"integrity":"sha512-qZqio9+8lmXLiIPJtYNCDnBvktJx16zkiXHWqhUBnuWOXkMObxkXHQ/Wk8Kwl0gZsttWDFCHW7KQetqMXVIw9g==","signatures":[{"sig":"MEQCIC693/bE6jRqhKAL81LHlb6hQDrQX4oE2p6WSSmq6HUrAiAKfG/+uJjuSMeIB92xlY/0ZHkM5FUK+v+To4K/3M74Fg==","keyid":"SHA256:jl3bwswu80PjjokCgh0o2w5c2U4LhQAE57gj9cz1kzA"}],"unpackedSize":28661,"npm-signature":"-----BEGIN PGP SIGNATURE-----\r\nVersion: OpenPGP.js v3.0.4\r\nComment: https://openpgpjs.org\r\n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\nJH0M\r\n=VAwo\r\n-----END PGP SIGNATURE-----\r\n"},"main":"iron-a11y-keys.js","readme":"[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n\n_[Demo and API docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. See the basic usage\nexample above.\n\nEach of the values for the `on-keys-pressed` attributes must evalute\nto methods. The `increment` method should move the slider a set amount\ntoward the maximum value. `decrement` should move the slider a set amount\ntoward the minimum value. `setMin` should move the slider to the minimum\nvalue. `setMax` should move the slider to the maximum value.\n","gitHead":"80d0d28da84ea102c894ae93f490b4512901dc71","scripts":{"format":"webmat && npm run update-types","update-types":"bower install && gen-typescript-declarations --deleteExisting --outDir ."},"_npmUser":{"name":"polymer","email":"admin@polymer-project.org"},"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"_npmVersion":"6.0.0","description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy 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docs](https://elements.polymer-project.org/elements/iron-a11y-keys)_\n\n## <iron-a11y-keys>\n\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\n## Basic usage\n\nThe sample code below is a portion of a custom element. The goal is to call\nthe `onEnter` method whenever the `paper-input` element is in focus and\nthe `Enter` key is pressed.\n\n```html\n\n\n```\n\nThe custom element declares an `iron-a11y-keys` element that is bound to a\nproperty called `target`. The `target` property\nneeds to evaluate to the `paper-input` node. `iron-a11y-keys` registers\nan event handler for the target node using Polymer's [annotated event handler\nsyntax](https://www.polymer-project.org/1.0/docs/devguide/events.html#annotated-listeners). `{{userInput::input}}` sets the `userInput` property to the\nuser's input on each keystroke.\n\nThe last step is to link the two elements within the custom element's\nregistration.\n\n```javascript\n...\nproperties: {\n userInput: {\n type: String,\n notify: true,\n },\n target: {\n type: Object\n },\n},\nready: function() {\n this.target = this.$.input;\n},\nonEnter: function() {\n console.log(this.userInput);\n}\n...\n```\n\n## The `keys` attribute\n\nThe `keys` attribute expresses what combination of keys triggers the event.\n\nThe attribute accepts a space-separated, plus-sign-concatenated\nset of modifier keys and some common keyboard keys.\n\nThe common keys are: `a-z`, `0-9` (top row and number pad), `*` (shift 8 and\nnumber pad), `F1-F12`, `Page Up`, `Page Down`, `Left Arrow`, `Right Arrow`,\n`Down Arrow`, `Up Arrow`, `Home`, `End`, `Escape`, `Space`, `Tab`, `Enter`.\n\nThe modifier keys are: `Shift`, `Control`, `Alt`, `Meta`.\n\nAll keys are expected to be lowercase and shortened. E.g.\n`Left Arrow` is `left`, `Page Down` is `pagedown`, `Control` is `ctrl`,\n`F1` is `f1`, `Escape` is `esc`, etc.\n\n### Grammar\n\nBelow is the [EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)\nGrammar of the `keys` attribute.\n\n```javascript\nmodifier = \"shift\" | \"ctrl\" | \"alt\" | \"meta\";\nascii = ? /[a-z0-9]/ ? ;\nfnkey = ? f1 through f12 ? ;\narrow = \"up\" | \"down\" | \"left\" | \"right\" ;\nkey = \"tab\" | \"esc\" | \"space\" | \"*\" | \"pageup\" | \"pagedown\" |\n \"home\" | \"end\" | arrow | ascii | fnkey;\nevent = \"keypress\" | \"keydown\" | \"keyup\";\nkeycombo = { modifier, \"+\" }, key, [ \":\", event ] ;\nkeys = keycombo, { \" \", keycombo } ;\n```\n\n### Example\n\nGiven the following value for `keys`:\n\n`ctrl+shift+f7 up pagedown esc space alt+m`\n\nThe event is fired if any of the following key combinations are fired:\n`Control` and `Shift` and `F7` keys, `Up Arrow` key, `Page Down` key,\n`Escape` key, `Space` key, `Alt` and `M` keys.\n\n### WAI-ARIA Slider Example\n\nThe following is an example of the set of keys that fulfills WAI-ARIA's\n\"slider\" role [best\npractices](http://www.w3.org/TR/wai-aria-practices/#slider):\n\n```html\n\n\n\n\n```\n\nThe `target` properties must evaluate to a node. 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Polymer Authors"},"license":"BSD-3-Clause","homepage":"https://github.com/PolymerElements/iron-a11y-keys#readme","keywords":["web-components","web-component","polymer","a11y","input"],"repository":{"url":"git://github.com/PolymerElements/iron-a11y-keys.git","type":"git"},"description":"A basic element implementation of iron-a11y-keys-behavior, matching the legacy core-a11y-keys.","maintainers":[{"email":"rictic@gmail.com","name":"rictic"},{"email":"aomarks@gmail.com","name":"aomarks"},{"email":"emarquez@google.com","name":"emarquez"},{"email":"sorvell@google.com","name":"sorvell"},{"email":"bicknellr@gmail.com","name":"bicknellr"},{"email":"brendan@usergenic.com","name":"usergenic"},{"email":"admin@polymer-project.org","name":"polymer-devs"},{"email":"dfreedm2@gmail.com","name":"azakus"},{"email":"kevinpschaaf@gmail.com","name":"kevinpschaaf"},{"email":"justin@fagnani.com","name":"justinfagnani"}],"readme":"[](https://www.npmjs.com/package/@polymer/iron-a11y-keys)\n[](https://travis-ci.org/PolymerElements/iron-a11y-keys)\n[](https://webcomponents.org/element/@polymer/iron-a11y-keys)\n\n## <iron-a11y-keys>\n`iron-a11y-keys` provides a cross-browser interface for processing\nkeyboard commands. The interface adheres to [WAI-ARIA best\npractices](http://www.w3.org/TR/wai-aria-practices/#kbd_general_binding).\nIt uses an expressive syntax to filter key presses.\n\nSee: [Documentation](https://www.webcomponents.org/element/@polymer/iron-a11y-keys),\n [Demo](https://www.webcomponents.org/element/@polymer/iron-a11y-keys/demo/demo/index.html).\n\n## Usage\n\n### Installation\n```\nnpm install --save @polymer/iron-a11y-keys\n```\n\n### In an html file\n```html\n\n \n \n \n \n \n\n \n \n\n```\n### In a Polymer 3 element\n```js\nimport {PolymerElement, html} from '@polymer/polymer';\nimport '@polymer/iron-a11y-keys/iron-a11y-keys.js';\n\nclass SampleElement extends PolymerElement {\n static get properties() {\n return {\n target: {\n type: Object,\n value: function() {\n return this.$.input;\n }\n },\n }\n }\n\n static get template() {\n return html`\n \n \n `;\n }\n\n function onEnter() {\n console.log(this.userInput);\n }\n}\ncustomElements.define('sample-element', SampleElement);\n```\n\n## Contributing\nIf you want to send a PR to this element, here are\nthe instructions for running the tests and demo locally:\n\n### Installation\n```sh\ngit clone https://github.com/PolymerElements/iron-a11y-keys\ncd iron-a11y-keys\nnpm install\nnpm install -g polymer-cli\n```\n\n### Running the demo locally\n```sh\npolymer serve --npm\nopen http://127.0.0.1:/demo/\n```\n\n### Running the tests\n```sh\npolymer test --npm\n```\n","readmeFilename":"README.md"}