1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394 | 1
1
| (function () {
'use strict';
angular.module('patternfly.canvas')
.filter('trustAsResourceUrl', ['$sce', function ($sce) {
return function (val) {
return $sce.trustAsResourceUrl(val);
};
}])
//
// Component that generates the rendered chart from the data model.
//
.component('pfCanvas', {
templateUrl: 'canvas-view/canvas/canvas.html',
bindings: {
chartDataModel:'=',
chartViewModel: '=?',
readOnly: '<?',
hideConnectors: '=?'
},
controller: function CanvasController ($scope, dragging, $element, $document) {
var ctrl = this;
ctrl.chart = new pfCanvas.ChartViewModel(ctrl.chartDataModel);
ctrl.chartViewModel = ctrl.chart;
//
// Init data-model variables.
//
ctrl.draggingConnection = false;
ctrl.connectorSize = 6;
ctrl.dragSelecting = false;
//
// Reference to the connection, connector or node that the mouse is currently over.
//
ctrl.mouseOverConnector = null;
ctrl.mouseOverConnection = null;
ctrl.mouseOverNode = null;
//
// Translate the coordinates so they are relative to the svg element.
//
this.translateCoordinates = function (x, y, evt) {
var svgElem = $element.get(0).children[0];
var matrix = svgElem.getScreenCTM();
var point = svgElem.createSVGPoint();
point.x = (x - evt.view.pageXOffset) / ctrl.zoomLevel();
point.y = (y - evt.view.pageYOffset) / ctrl.zoomLevel();
return point.matrixTransform(matrix.inverse());
};
ctrl.hideConnectors = ctrl.hideConnectors || false;
ctrl.isConnectorConnected = function (connector) {
return (connector && connector.connected());
};
ctrl.isConnectorUnconnectedAndValid = function (connector) {
return (connector && !connector.connected() && !connector.invalid() &&
connector.parentNode() !== ctrl.connectingModeSourceNode);
};
// determines if a dest. connector is connected to the source node
ctrl.isConnectedTo = function (connector, node) {
var i,connection;
var connections = ctrl.chart.connections;
for (i = 0; i < connections.length; i++) {
connection = connections[i];
if (connection.dest === connector && connection.source.parentNode() === node) {
return true;
}
}
return false;
};
ctrl.availableConnections = function () {
return ctrl.chart.validConnections;
};
ctrl.foreignObjectSupported = function () {
return $document[0].implementation.hasFeature('http://www.w3.org/TR/SVG11/feature#Extensibility', '1.1');
};
ctrl.addNodeToCanvas = function (newNode) {
ctrl.chart.addNode(newNode);
};
$scope.$on('selectAll', function () {
ctrl.selectAll();
});
ctrl.selectAll = function () {
ctrl.chart.selectAll();
};
$scope.$on('deselectAll', function () {
ctrl.deselectAll();
});
ctrl.deselectAll = function () {
ctrl.chart.deselectAll();
};
$scope.$on('deleteSelected', function () {
ctrl.deleteSelected();
});
ctrl.deleteSelected = function () {
ctrl.chart.deleteSelected();
};
//
// Called on mouse down in the chart.
//
ctrl.mouseDown = function (evt) {
if (ctrl.readOnly) {
return;
}
if (ctrl.chart.inConnectingMode ) {
// canceling out of connection mode, remove unused output connector
ctrl.cancelConnectingMode();
}
ctrl.chart.deselectAll();
ctrl.chart.clickedOnChart = true;
dragging.startDrag(evt, {
//
// Commence dragging... setup variables to display the drag selection rect.
//
dragStarted: function (x, y) {
var startPoint;
ctrl.dragSelecting = true;
startPoint = ctrl.translateCoordinates(x, y, evt);
ctrl.dragSelectionStartPoint = startPoint;
ctrl.dragSelectionRect = {
x: startPoint.x,
y: startPoint.y,
width: 0,
height: 0
};
},
//
// Update the drag selection rect while dragging continues.
//
dragging: function (x, y) {
var startPoint = ctrl.dragSelectionStartPoint;
var curPoint = ctrl.translateCoordinates(x, y, evt);
ctrl.dragSelectionRect = {
x: curPoint.x > startPoint.x ? startPoint.x : curPoint.x,
y: curPoint.y > startPoint.y ? startPoint.y : curPoint.y,
width: curPoint.x > startPoint.x ? curPoint.x - startPoint.x : startPoint.x - curPoint.x,
height: curPoint.y > startPoint.y ? curPoint.y - startPoint.y : startPoint.y - curPoint.y,
};
},
//
// Dragging has ended... select all that are within the drag selection rect.
//
dragEnded: function () {
ctrl.dragSelecting = false;
ctrl.chart.applySelectionRect(ctrl.dragSelectionRect);
delete ctrl.dragSelectionStartPoint;
delete ctrl.dragSelectionRect;
}
});
};
//
// Handle nodeMouseOver on an node.
//
ctrl.nodeMouseOver = function (evt, node) {
if (!ctrl.readOnly) {
ctrl.mouseOverNode = node;
}
};
//
// Handle nodeMouseLeave on an node.
//
ctrl.nodeMouseLeave = function () {
ctrl.mouseOverNode = null;
};
//
// Handle mousedown on a node.
//
ctrl.nodeMouseDown = function (evt, node) {
var chart = ctrl.chart;
var lastMouseCoords;
if (ctrl.readOnly) {
return;
}
dragging.startDrag(evt, {
//
// Node dragging has commenced.
//
dragStarted: function (x, y) {
lastMouseCoords = ctrl.translateCoordinates(x, y, evt);
//
// If nothing is selected when dragging starts,
// at least select the node we are dragging.
//
if (!node.selected()) {
chart.deselectAll();
node.select();
}
},
//
// Dragging selected nodes... update their x,y coordinates.
//
dragging: function (x, y) {
var curCoords = ctrl.translateCoordinates(x, y, evt);
var deltaX = curCoords.x - lastMouseCoords.x;
var deltaY = curCoords.y - lastMouseCoords.y;
chart.updateSelectedNodesLocation(deltaX, deltaY);
lastMouseCoords = curCoords;
},
//
// The node wasn't dragged... it was clicked.
//
clicked: function () {
chart.handleNodeClicked(node, evt.ctrlKey);
}
});
};
//
// Listen for node action
//
ctrl.nodeClickHandler = function (action, node) {
if (action === 'nodeActionConnect') {
ctrl.startConnectingMode(node);
}
};
ctrl.nodeCloseHandler = function () {
ctrl.mouseOverNode = null;
};
ctrl.connectingModeOutputConnector = null;
ctrl.connectingModeSourceNode = null;
ctrl.startConnectingMode = function (node) {
ctrl.chart.inConnectingMode = true;
ctrl.hideConnectors = false;
ctrl.connectingModeSourceNode = node;
ctrl.connectingModeSourceNode.select();
ctrl.connectingModeOutputConnector = node.getOutputConnector();
ctrl.chart.updateValidNodesAndConnectors(ctrl.connectingModeSourceNode);
};
ctrl.cancelConnectingMode = function () {
// if output connector not connected to something, remove it
if (!ctrl.connectingModeOutputConnector.connected()) {
ctrl.chart.removeOutputConnector(ctrl.connectingModeOutputConnector);
}
ctrl.stopConnectingMode();
};
ctrl.stopConnectingMode = function () {
ctrl.chart.inConnectingMode = false;
ctrl.chart.resetValidNodesAndConnectors();
};
//
// Handle connectionMouseOver on an connection.
//
ctrl.connectionMouseOver = function (evt, connection) {
if (!ctrl.draggingConnection && !ctrl.readOnly) { // Only allow 'connection mouse over' when not dragging out a connection.
ctrl.mouseOverConnection = connection;
}
};
//
// Handle connectionMouseLeave on an connection.
//
ctrl.connectionMouseLeave = function () {
ctrl.mouseOverConnection = null;
};
//
// Handle mousedown on a connection.
//
ctrl.connectionMouseDown = function (evt, connection) {
var chart = ctrl.chart;
if (!ctrl.readOnly) {
chart.handleConnectionMouseDown(connection, evt.ctrlKey);
}
// Don't let the chart handle the mouse down.
evt.stopPropagation();
evt.preventDefault();
};
//
// Handle connectorMouseOver on an connector.
//
ctrl.connectorMouseOver = function (evt, node, connector) {
if (!ctrl.readOnly) {
ctrl.mouseOverConnector = connector;
}
};
//
// Handle connectorMouseLeave on an connector.
//
ctrl.connectorMouseLeave = function () {
ctrl.mouseOverConnector = null;
};
//
// Handle mousedown on an input connector.
//
ctrl.connectorMouseDown = function (evt, node) {
if (ctrl.chart.inConnectingMode && node !== ctrl.connectingModeSourceNode) {
ctrl.chart.createNewConnection(ctrl.connectingModeOutputConnector, ctrl.mouseOverConnector);
ctrl.stopConnectingMode();
}
};
//
// zoom.
//
$scope.$on('zoomIn', function () {
ctrl.chart.zoom.in();
});
$scope.$on('zoomOut', function () {
ctrl.chart.zoom.out();
});
$scope.maxZoom = function () {
return (ctrl.chart.chartViewModel && ctrl.chart.chartViewModel.zoom) ? ctrl.chart.chartViewModel.zoom.isMax() : false;
};
$scope.minZoom = function () {
return (ctrl.chart.chartViewModel && ctrl.chart.chartViewModel.zoom) ? ctrl.chart.chartViewModel.zoom.isMin() : false;
};
ctrl.zoomLevel = function () {
return ctrl.chart.zoom.getLevel();
};
ctrl.$onInit = function () {
var backspaceKeyCode = 8;
var deleteKeyCode = 46;
var aKeyCode = 65;
var escKeyCode = 27;
$document.find('body').keydown(function (evt) {
if (evt.keyCode === aKeyCode && evt.ctrlKey === true) {
//
// Ctrl + A
//
ctrl.selectAll();
$scope.$digest();
evt.stopPropagation();
evt.preventDefault();
}
if (evt.keyCode === deleteKeyCode || evt.keyCode === backspaceKeyCode) {
ctrl.deleteSelected();
$scope.$digest();
}
if (evt.keyCode === escKeyCode) {
ctrl.deselectAll();
$scope.$digest();
}
});
};
}
});
})();
|