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It is ended by either a {@link press} or * {@link pressCancel} event. * * @event pressStart * @memberof PressComposer * @param {PressEvent} event */ /** * Dispatched when a press is complete. * * @event press * @memberof PressComposer * @param {PressEvent} event */ /** * Dispatched when a press lasts for longer than (@link longPressThreshold} * On a long press, the sequence of events will be: * - pressStart: as soon as the composer recognizes it is a press. * - longPress: `longPressThreshold` after the pressStart, if the press has * not yet ended. * - press: when the press ends, if it isn't cancelled. * * Handlers of the `longPress` event can call `cancelPress` to prevent * `press` being triggered. * * @event longPress * @memberof PressComposer * @param {PressEvent} event */ /** * Dispatched when a press is canceled. This could be because the pointer * left the element, was claimed by another component or maybe a phone call * came in. * * @event pressCancel * @memberof PressComposer * @param {PressEvent} event */ // Load/unload load: { value: function () { Iif (window.PointerEvent) { this._element.addEventListener("pointerdown", this, true); } else Iif (window.MSPointerEvent && window.navigator.msPointerEnabled) { this._element.addEventListener("MSPointerDown", this, true); } else { this._element.addEventListener("touchstart", this, true); this._element.addEventListener("mousedown", this, true); } } }, unload: { value: function () { Iif (window.PointerEvent) { this._element.removeEventListener("pointerdown", this, true); } else Iif (window.MSPointerEvent && window.navigator.msPointerEnabled) { this._element.removeEventListener("MSPointerDown", this, true); } else { this._element.removeEventListener("touchstart", this, true); this._element.removeEventListener("mousedown", this, true); } } }, /** * Delegate that implements `surrenderPointer`. See Component for * explanation of what this method should do. * * @type {Object} * @default null */ delegate: { value: null }, /** * Cancel the current press. * * Can be used in a "longPress" event handler to prevent the "press" event * being fired. * @returns boolean true if a press was canceled, false if the composer was * already in a unpressed or canceled state. */ cancelPress: { value: function () { Iif (this._state === PressComposer.PRESSED) { this._cancelPress(); return true; } return false; } }, _cancelPress: { value: function (event) { this._dispatchPressCancel(event); this._endInteraction(); } }, // Optimisation so that we don't set a timeout if we do not need to addEventListener: { value: function (type, listener, useCapture) { Composer.prototype.addEventListener.call(this, type, listener, useCapture); if (type === "longPress") { this._shouldDispatchLongPress = true; } } }, _state: { value: 0 }, state: { get: function () { return this._state; } }, _shouldDispatchLongPress: { value: false }, _longPressThreshold: { value: 1000 }, /** * How long a press has to last (in milliseconds) for a longPress event to * be dispatched * @type number */ longPressThreshold: { get: function () { return this._longPressThreshold; }, set: function (value) { if (this._longPressThreshold !== value) { this._longPressThreshold = value; } } }, _needDispatchSafePress: { value: false }, _longPressTimeout: { value: null }, // Magic _observedPointer: { value: null }, _initialCenterPositionX: { value : 0 }, _initialCenterPositionY: { value: 0 }, _shouldSaveInitialCenterPosition: { value: false }, _targetElementOnLastTouchMove: { value: null }, /** * Remove event listeners after an interaction has finished. * @private */ _endInteraction: { value: function () { if (this._element) { this._removeEventListeners(); if (this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { this.component.eventManager.forfeitPointer(this._observedPointer, this); } this._observedPointer = null; this._targetElementOnLastTouchMove = null; this._state = PressComposer.UNPRESSED; this._initialCenterPositionX = 0; this._initialCenterPositionY = 0; this._shouldSaveInitialCenterPosition = false; } } }, /** * Checks if we are observing one of the changed touches. Returns the index * of the changed touch if one matches, otherwise returns false. Make sure * to check against `!== false` or `=== false` as the * matching index might be 0. * * @function * @returns {number|boolean} The index of the matching touch, or false * @private */ _changedTouchisObserved: { value: function (changedTouches) { if (this._observedPointer === null) { return false; } var i = 0, changedTouchCount = changedTouches.length; for (; i < changedTouchCount; i++) { if (changedTouches[i].identifier === this._observedPointer) { return i; } } return false; } }, // Surrender pointer surrenderPointer: { value: function (pointer, component) { var shouldSurrender = this.callDelegateMethod( "shouldComposerSurrenderPointerToComponent", this, pointer, component ); if (typeof shouldSurrender !== "undefined" && shouldSurrender === false) { return false; } this.cancelPress(); return true; } }, _shouldPerformPress: { value: function () { return !(this.component.disabled || this._observedPointer !== null); } }, // Handlers capturePointerdown: { value: function (event) { if (event.pointerType === "touch" || (window.MSPointerEvent && event.pointerType === window.MSPointerEvent.MSPOINTER_TYPE_TOUCH)) { this.captureTouchstart(event); } else if (event.pointerType === "mouse" || (window.MSPointerEvent && event.pointerType === window.MSPointerEvent.MSPOINTER_TYPE_MOUSE)) { this.captureMousedown(event); } } }, handlePointerup: { value: function (event) { if (event.pointerType === "touch" || (window.MSPointerEvent && event.pointerType === window.MSPointerEvent.MSPOINTER_TYPE_TOUCH)) { this.handleTouchend(event); } else if (event.pointerType === "mouse" || (window.MSPointerEvent && event.pointerType === window.MSPointerEvent.MSPOINTER_TYPE_MOUSE)) { this.handleMouseup(event); } } }, handlePointercancel: { value: function (event) { if (event.pointerType === "touch" || (window.MSPointerEvent && event.pointerType === window.MSPointerEvent.MSPOINTER_TYPE_TOUCH)) { this.handleTouchcancel(event); } } }, captureTouchstart: { value: function (event) { if (this._shouldPerformPress()) { if (event.pointerId !== void 0) { // -> pointer events support. this._observedPointer = event.pointerId; } else if (event.changedTouches && event.changedTouches.length === 1) { this._observedPointer = event.changedTouches[0].identifier; } if (this._observedPointer !== null && this.component.eventManager.claimPointer(this._observedPointer, this)) { this._addPointerDownListener(); } else { this._observedPointer = null; } } } }, handleTouchend: { value: function (event) { if (this._observedPointer === null) { this._endInteraction(event); return; } var target; if (event.pointerId === this._observedPointer) { target = event.target; } else if (this._changedTouchisObserved(event.changedTouches) !== false) { // We need to keep the last element reached by a touchmove because we can't just rely on the position // given by the touchEnd because in some cases, hiding the android keyboard for example, could result // to change the press composer's element position between a touchStart and a touchEnd event. Therefore, // getting the "wrong" target. target = this._targetElementOnLastTouchMove || event.target; } if (target && this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { if (this.element === target || this.element.contains(target)) { this._dispatchPress(event, typeof event.pointerId === "undefined" ? target : null); } else { this._dispatchPressCancel(event); } this._endInteraction(event); } } }, // The PressComposer saves the initial center position after the first move or the first wheel event, // in order to wait for a possible css transform (translate, scale...) appeared on its element // after that the PressStart event has been raised. _saveInitialCenterPositionIfNeeded: { value: function () { if (this._shouldSaveInitialCenterPosition) { this._saveInitialCenterPosition(); this._shouldSaveInitialCenterPosition = false; } } }, _cancelPressIfCenterPositionChange: { value: function (event) { this._saveInitialCenterPositionIfNeeded(); if (this._isPositionChanged(event)) { this._cancelPress(event); return true; } return false; } }, _handleMove: { value: function (event) { if (this._observedPointer === null) { this._endInteraction(event); return; } this._needDispatchSafePress = false; if ((this._observedPointer === "mouse" || event.pointerId === this._observedPointer || (event.changedTouches && this._changedTouchisObserved(event.changedTouches) !== false)) && this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { if (!this._cancelPressIfCenterPositionChange(event) && event.type === "touchmove") { var touch = event.changedTouches[0]; this._targetElementOnLastTouchMove = document.elementFromPoint(touch.clientX, touch.clientY); } } } }, captureWheel: { value: function (event) { if (this._observedPointer === null) { this._endInteraction(event); return; } if ((event.target === this.element || event.target === window || (typeof event.target.contains === "function" && event.target.contains(this.element)) || this.element.contains(event.target))) { this._cancelPressIfCenterPositionChange(event); } } }, handleTouchcancel: { value: function (event) { if (this._observedPointer === null || event.pointerId === this._observedPointer || this._changedTouchisObserved(event.changedTouches) !== false) { if (this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { this._dispatchPressCancel(event); } this._endInteraction(event); } } }, captureMousedown: { value: function (event) { if (event.button === 0 && this._shouldPerformPress()) { this._observedPointer = "mouse"; this.component.eventManager.claimPointer(this._observedPointer, this); if (this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { this._addPointerDownListener(); } else{ this._observedPointer = null; } } } }, /** * Handle every kind of interactions (touch, mouse or pointer), * in order to check if a press composer still claims the observed pointer in the bubbling phase. * @private */ _handlePointerDown: { value: function (event) { this._removePointerDownListener(); if (this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { this._needDispatchSafePress = false; if (event.type === "touchstart") { var self = this; window.nativeAddEventListener("touchstart", function _touchStartDefaultPrevented (touchStartEvent) { window.nativeRemoveEventListener("touchstart", _touchStartDefaultPrevented, false); self._needDispatchSafePress = !touchStartEvent.defaultPrevented; }, false); } this._shouldSaveInitialCenterPosition = true; this._addEventListeners(); this._dispatchPressStart(event); } else { this._observedPointer = null; } } }, captureScroll: { value: function (event) { if (event.target === this.element || event.target === window || (typeof event.target.contains === "function" && event.target.contains(this.element)) || this.element.contains(event.target)) { this._cancelPressIfCenterPositionChange(event); } } }, handleMouseup: { value: function (event) { if (this._observedPointer === null) { this._endInteraction(event); return; } if (this.component.eventManager.isPointerClaimedByComponent(this._observedPointer, this)) { var target = event.target; while (target !== this._element && target && target.parentNode) { target = target.parentNode; } if (target === this._element) { this._dispatchPress(event); this._endInteraction(event); return; } } this._cancelPress(event); } }, handleDragstart: { value: function (event) { this._cancelPress(event); } }, _saveInitialCenterPosition: { value: function () { // Makes sure we compute the position of a PressComposer’s element only on HTMLElement. // Indeed a press composer can be used on other objects such as document, window… if (this.element instanceof HTMLElement) { var boundingClientRect = this.element.getBoundingClientRect(); this._initialCenterPositionX = boundingClientRect.left + (boundingClientRect.width / 2); this._initialCenterPositionY = boundingClientRect.top + (boundingClientRect.height / 2); } } }, _isPositionChanged: { value: function (event) { if (this.element instanceof HTMLElement) { var boundingClientRect = this.element.getBoundingClientRect(), newCenterPositionX = boundingClientRect.left + (boundingClientRect.width / 2), newCenterPositionY = boundingClientRect.top + (boundingClientRect.height / 2); if (this._initialCenterPositionX !== newCenterPositionX || this._initialCenterPositionY !== newCenterPositionY) { var type = event.type, deltaX = Math.abs(this._initialCenterPositionX - newCenterPositionX), deltaY = Math.abs(this._initialCenterPositionY - newCenterPositionY), radius = this._observedPointer === "mouse" || type === "wheel" || type === "mousewheel" || type === "scroll" ? this._mouseRadiusThreshold : this._touchRadiusThreshold; return Composer.isCoordinateOutsideRadius(deltaX, deltaY, radius); } } return false; } }, _mouseRadiusThreshold: { value: 2 //px }, _touchRadiusThreshold: { value: 4 //px }, _addPointerDownListener: { value: function () { if (window.PointerEvent) { this._element.addEventListener("pointerdown", this, false); } else if (window.MSPointerEvent && window.navigator.msPointerEnabled) { this._element.addEventListener("MSPointerDown", this, false); } else { if (this._observedPointer === "mouse") { this._element.addEventListener("mousedown", this, false); } else { this._element.addEventListener("touchstart", this, false); } } } }, _removePointerDownListener: { value: function () { if (window.PointerEvent) { this._element.removeEventListener("pointerdown", this, false); } else if (window.MSPointerEvent && window.navigator.msPointerEnabled) { this._element.removeEventListener("MSPointerDown", this, false); } else { if (this._observedPointer === "mouse") { this._element.removeEventListener("mousedown", this, false); } else { this._element.removeEventListener("touchstart", this, false); } } } }, _addEventListeners: { value: function () { if (window.PointerEvent) { document.addEventListener("pointerup", this, false); document.addEventListener("pointermove", this, false); document.addEventListener("pointercancel", this, false); } else if (window.MSPointerEvent && window.navigator.msPointerEnabled) { document.addEventListener("MSPointerUp", this, false); document.addEventListener("MSPointerMove", this, false); document.addEventListener("MSPointerCancel", this, false); } else { if (this._observedPointer === "mouse") { document.addEventListener("mouseup", this, false); document.addEventListener("mousemove", this, false); // Needed to cancel the press because once a drag is started // no mouse events are fired // http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#initiate-the-drag-and-drop-operation this._element.addEventListener("dragstart", this, false); } else { document.addEventListener("touchend", this, false); document.addEventListener("touchcancel", this, false); document.addEventListener("touchmove", this, false); } } var wheelEventName = typeof window.onwheel !== "undefined" || typeof window.WheelEvent !== "undefined" ? "wheel" : "mousewheel"; document.addEventListener(wheelEventName, this, true); document.addEventListener("scroll", this, true); } }, _removeEventListeners: { value: function () { if (window.PointerEvent) { document.removeEventListener("pointerup", this, false); document.removeEventListener("pointermove", this, false); document.removeEventListener("pointercancel", this, false); } else if (window.MSPointerEvent && window.navigator.msPointerEnabled) { document.removeEventListener("MSPointerUp", this, false); document.removeEventListener("MSPointerMove", this, false); document.removeEventListener("MSPointerCancel", this, false); } else { if (this._observedPointer === "mouse") { document.removeEventListener("mouseup", this, false); document.removeEventListener("mousemove", this, false); // Needed to cancel the press because once a drag is started // no mouse events are fired // http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#initiate-the-drag-and-drop-operation this._element.removeEventListener("dragstart", this, false); } else { document.removeEventListener("touchend", this, false); document.removeEventListener("touchcancel", this, false); document.removeEventListener("touchmove", this, false); } } var wheelEventName = typeof window.onwheel !== "undefined" || typeof window.WheelEvent !== "undefined" ? "wheel" : "mousewheel"; document.removeEventListener(wheelEventName, this, true); document.removeEventListener("scroll", this, true); } }, // Event dispatch _createPressEvent: { enumerable: false, value: function (name, event) { var contactPoint = event, pressEvent, index; Iif (!event) { event = document.createEvent("CustomEvent"); event.initCustomEvent(name, true, true, null); } pressEvent = new PressEvent(); pressEvent.event = event; pressEvent.type = name; pressEvent.pointer = this._observedPointer; pressEvent.targetElement = event.target; Iif (event.changedTouches && (index = this._changedTouchisObserved(event.changedTouches)) !== false) { contactPoint = pressEvent.touch = event.changedTouches[index]; } Eif (contactPoint) { // a PressCancel event can be dispatched programtically, so with no event. pressEvent.clientX = contactPoint.clientX; pressEvent.clientY = contactPoint.clientY; pressEvent.pageX = contactPoint.pageX; pressEvent.pageY = contactPoint.pageY; } return pressEvent; } }, _dispatchPressStart: { enumerable: false, value: function (event) { this._state = PressComposer.PRESSED; this.dispatchEvent(this._createPressEvent("pressStart", event)); Iif (this._shouldDispatchLongPress) { var self = this; this._longPressTimeout = setTimeout(function () { self._dispatchLongPress(); }, this._longPressThreshold); } } }, _dispatchPress: { enumerable: false, value: function (event, touchEndTargetElement) { if (this._shouldDispatchLongPress) { clearTimeout(this._longPressTimeout); this._longPressTimeout = null; } var pressEvent = this._createPressEvent("press", event); // The target of touchend events is actually the same element on which the touch point started. // So, we override the property targetElement of the PressEvent with the element on which the touch point has been released. if (touchEndTargetElement) { pressEvent.targetElement = touchEndTargetElement; if (this._needDispatchSafePress || event.defaultPrevented) {// no simulated events when a touchMove has been raised var self = this, eventManager = document.defaultView.defaultEventManager; // Raise a Press event after the simulated mousedown event has been raised, // in order to avoid elements that are not on the same layer to get the focus. // @example: When a button is pressed in order to hide a overlay that it belong to. // Knowing that, the simulated mouse events are not dispatched by the event manager, but they are still // walking the dom. An issue could happen here when the positioning of elements is changing (z-index) // after the press event has been raised, which could result to giving the focus to a wrong element. // @example: @see press-composer.info //@todo: should be deprecated when browsers will support PointerEvents. var dispatchSafePressCallBack = function (mouseDownEvent) { if (touchEndTargetElement === mouseDownEvent.target || eventManager._couldEmulatedEventHaveWrongTarget( event.changedTouches[0], mouseDownEvent, eventManager._emulatedEventRadiusThreshold, eventManager._emulatedEventTimestampThreshold ) ) { self._dispatchSafePress(pressEvent, dispatchSafePressCallBack); } }; window.nativeAddEventListener("mousedown", dispatchSafePressCallBack, true); // -> long press fallBack: no simulated events with long touch press. dispatchSafePressCallBack.timeoutID = setTimeout(function () { self._dispatchSafePress(pressEvent, dispatchSafePressCallBack); }, 300); return void 0; } } this.dispatchEvent(pressEvent); this._state = PressComposer.UNPRESSED; } }, _dispatchSafePress: { value: function (pressEvent, dispatchSafePressCallBack) { clearTimeout(dispatchSafePressCallBack.timeoutID); dispatchSafePressCallBack.timeoutID = null; window.nativeRemoveEventListener("mousedown", dispatchSafePressCallBack, true); this.dispatchEvent(pressEvent); this._state = PressComposer.UNPRESSED; } }, _dispatchLongPress: { enumerable: false, value: function (event) { if (this._shouldDispatchLongPress) { this.dispatchEvent(this._createPressEvent("longPress", event)); this._longPressTimeout = null; } } }, _dispatchPressCancel: { enumerable: false, value: function (event) { if (this._shouldDispatchLongPress) { clearTimeout(this._longPressTimeout); this._longPressTimeout = null; } this._state = PressComposer.CANCELLED; this.dispatchEvent(this._createPressEvent("pressCancel", event)); } } } , { UNPRESSED: { value: 0 }, PRESSED: { value: 1 }, CANCELLED: { value: 2 } }); PressComposer.prototype.captureMSPointerDown = PressComposer.prototype.capturePointerdown; PressComposer.prototype.handleMSPointerUp = PressComposer.prototype.handlePointerup; PressComposer.prototype.handleMSPointerCancel = PressComposer.prototype.handlePointercancel; PressComposer.prototype.handleMSPointerMove = PressComposer.prototype._handleMove; PressComposer.prototype.handlePointermove = PressComposer.prototype._handleMove; PressComposer.prototype.handleTouchmove = PressComposer.prototype._handleMove; PressComposer.prototype.handleMousemove = PressComposer.prototype._handleMove; PressComposer.prototype.handleMousewheel = PressComposer.prototype.handleWheel; PressComposer.prototype.handleMSPointerDown = PressComposer.prototype._handlePointerDown; PressComposer.prototype.handlePointerdown = PressComposer.prototype._handlePointerDown; PressComposer.prototype.handleMousedown = PressComposer.prototype._handlePointerDown; PressComposer.prototype.handleTouchstart = PressComposer.prototype._handlePointerDown; /* * @class PressEvent * @inherits MutableEvent * @classdesc The event dispatched by the `PressComposer`, providing access to * the raw DOM event and proxying its properties. */ var PressEvent = (function (){ var value, eventProps, typeProps, eventPropDescriptor, typePropDescriptor, i; value = MutableEvent.specialize({ type: { value: "press" }, _event: { enumerable: false, value: null }, event: { get: function () { return this._event; }, set: function (value) { this._event = value; } }, _touch: { enumerable: false, value: null }, touch: { get: function () { return this._touch; }, set: function (value) { this._touch = value; } } }); // These properties are available directly on the event eventProps = ["altKey", "ctrlKey", "metaKey", "shiftKey", "cancelBubble", "currentTarget", "defaultPrevented", "eventPhase", "timeStamp", "preventDefault", "stopImmediatePropagation", "stopPropagation"]; // These properties are available on the event in the case of mouse, and // on the _touch in the case of touch typeProps = ["clientX", "clientY", "pageX", "pageY", "screenX", "screenY", "target"]; eventPropDescriptor = function (prop) { return { get: function () { return this._event[prop]; } }; }; typePropDescriptor = function (prop) { return { get: function () { return (this._touch) ? this._touch[prop] : this._event[prop]; } }; }; for (i = eventProps.length - 1; i >= 0; i--) { Montage.defineProperty(value, eventProps[i], eventPropDescriptor(eventProps[i])); } for (i = typeProps.length - 1; i >= 0; i--) { Montage.defineProperty(value, typeProps[i], typePropDescriptor(typeProps[i])); } return value; }()); |