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[dygraphs.git] / auto_tests / tests / DygraphOps.js
1 // Copyright (c) 2011 Google, Inc.
2 //
3 // Permission is hereby granted, free of charge, to any person obtaining a copy
4 // of this software and associated documentation files (the "Software"), to deal
5 // in the Software without restriction, including without limitation the rights
6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 // copies of the Software, and to permit persons to whom the Software is
8 // furnished to do so, subject to the following conditions:
9 //
10 // The above copyright notice and this permission notice shall be included in
11 // all copies or substantial portions of the Software.
12 //
13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 // THE SOFTWARE.
20
21
22 /**
23 * @fileoverview Utility functions for Dygraphs.
24 *
25 * @author konigsberg@google.com (Robert Konigsberg)
26 */
27 var DygraphOps = {};
28
29 DygraphOps.defaultEvent_ = {
30 type : '',
31 canBubble : true,
32 cancelable : true,
33 view : document.defaultView,
34 detail : 0,
35 screenX : 0,
36 screenY : 0,
37 clientX : 0,
38 clientY : 0,
39 ctrlKey : false,
40 altKey : false,
41 shiftKey : false,
42 metaKey : false,
43 button : 0,
44 relatedTarget : null
45 };
46
47 /**
48 * Create an event. Sets default event values except for special ones
49 * overridden by the 'custom' parameter.
50 *
51 * @param command the command to create.
52 * @param custom an associative array of event attributes and their new values.
53 */
54 DygraphOps.createEvent = function(command, custom) {
55
56 var copy = function(from, to) {
57 if (from != null) {
58 for (var prop in from) {
59 if(from.hasOwnProperty(prop)) {
60 to[prop] = from[prop];
61 }
62 }
63 }
64 }
65
66 var e = {};
67 copy(DygraphOps.defaultEvent_, e);
68 copy(command, e);
69 copy(custom, e);
70
71 var event = document.createEvent('MouseEvents');
72 event.initMouseEvent(
73 e.type,
74 e.canBubble,
75 e.cancelable,
76 e.view,
77 e.detail,
78 e.screenX,
79 e.screenY,
80 e.clientX,
81 e.clientY,
82 e.ctrlKey,
83 e.altKey,
84 e.shiftKey,
85 e.metaKey,
86 e.button,
87 e.relatedTarget);
88 return event;
89 };
90
91 /**
92 * Dispatch an event onto the graph's canvas.
93 */
94 DygraphOps.dispatchCanvasEvent = function(g, event) {
95 g.canvas_.dispatchEvent(event);
96 };
97
98 DygraphOps.dispatchDoubleClick = function(g, custom) {
99 var opts = {
100 type : 'dblclick',
101 detail : 2
102 };
103 var event = DygraphOps.createEvent(opts, custom);
104 DygraphOps.dispatchCanvasEvent(g, event);
105 };
106
107 /*
108 * Create an 'opts' argument which can be passed to createEvent that contains
109 * type, screenX, screenY, clientX, clientY.
110 */
111 DygraphOps.createOptsForPoint_ = function(g, type, x, y) {
112 var pos = Dygraph.findPos(g.canvas_);
113 var pageX = pos.x + x;
114 var pageY = pos.y + y;
115
116 return {
117 type : type,
118 screenX : pageX,
119 screenY : pageY,
120 clientX : pageX,
121 clientY : pageY,
122 };
123 };
124
125 DygraphOps.dispatchMouseDown_Point = function(g, x, y, custom) {
126 var opts = DygraphOps.createOptsForPoint_(g, 'mousedown', x, y);
127 opts.detail = 1;
128 var event = DygraphOps.createEvent(opts, custom);
129 DygraphOps.dispatchCanvasEvent(g, event);
130 };
131
132 DygraphOps.dispatchMouseMove_Point = function(g, x, y, custom) {
133 var opts = DygraphOps.createOptsForPoint_(g, 'mousemove', x, y);
134 var event = DygraphOps.createEvent(opts, custom);
135 DygraphOps.dispatchCanvasEvent(g, event);
136 };
137
138 DygraphOps.dispatchMouseUp_Point = function(g, x, y, custom) {
139 var opts = DygraphOps.createOptsForPoint_(g, 'mouseup', x, y);
140 var event = DygraphOps.createEvent(opts, custom);
141 DygraphOps.dispatchCanvasEvent(g, event);
142 };
143
144 DygraphOps.dispatchMouseOver_Point = function(g, x, y, custom) {
145 var opts = DygraphOps.createOptsForPoint_(g, 'mouseover', x, y);
146 var event = DygraphOps.createEvent(opts, custom);
147 DygraphOps.dispatchCanvasEvent(g, event);
148 };
149
150 DygraphOps.dispatchMouseOut_Point = function(g, x, y, custom) {
151 var opts = DygraphOps.createOptsForPoint_(g, 'mouseout', x, y);
152 var event = DygraphOps.createEvent(opts, custom);
153 DygraphOps.dispatchCanvasEvent(g, event);
154 };
155
156 /**
157 * Dispatches a mouse down using the graph's data coordinate system.
158 * (The y value mapped to the first axis.)
159 */
160 DygraphOps.dispatchMouseDown = function(g, x, y, custom) {
161 DygraphOps.dispatchMouseDown_Point(
162 g,
163 g.toDomXCoord(x),
164 g.toDomYCoord(y),
165 custom);
166 };
167
168 /**
169 * Dispatches a mouse move using the graph's data coordinate system.
170 * (The y value mapped to the first axis.)
171 */
172 DygraphOps.dispatchMouseMove = function(g, x, y, custom) {
173 DygraphOps.dispatchMouseMove_Point(
174 g,
175 g.toDomXCoord(x),
176 g.toDomYCoord(y),
177 custom);
178 };
179
180 /**
181 * Dispatches a mouse up using the graph's data coordinate system.
182 * (The y value mapped to the first axis.)
183 */
184 DygraphOps.dispatchMouseUp = function(g, x, y, custom) {
185 DygraphOps.dispatchMouseUp_Point(
186 g,
187 g.toDomXCoord(x),
188 g.toDomYCoord(y),
189 custom);
190 };
191
192 /**
193 * Dispatches a mouse over using the graph's data coordinate system.
194 * (The y value mapped to the first axis.)
195 */
196 DygraphOps.dispatchMouseOver = function(g, x, y, custom) {
197 DygraphOps.dispatchMouseOver_Point(
198 g,
199 g.toDomXCoord(x),
200 g.toDomYCoord(y),
201 custom);
202 };
203
204 /**
205 * Dispatches a mouse out using the graph's data coordinate system.
206 * (The y value mapped to the first axis.)
207 */
208 DygraphOps.dispatchMouseOut = function(g, x, y, custom) {
209 DygraphOps.dispatchMouseOut_Point(
210 g,
211 g.toDomXCoord(x),
212 g.toDomYCoord(y),
213 custom);
214 };
215