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9c585af6 RK |
1 | // Copyright (c) 2013 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 Plug-in for providing unzoom-on-hover. | |
24 | * | |
25 | * @author konigsberg@google.com (Robert Konigsberg) | |
26 | */ | |
27 | Dygraph.Plugins.Unzoom = (function() { | |
28 | ||
29 | "use strict"; | |
30 | ||
31 | /** | |
32 | * Draws the unzoom box. | |
33 | * | |
34 | * @constructor | |
35 | */ | |
36 | var unzoom = function() { | |
37 | }; | |
38 | ||
39 | unzoom.prototype.toString = function() { | |
40 | return "Unzoom Plugin"; | |
41 | }; | |
42 | ||
43 | unzoom.prototype.activate = function(g) { | |
44 | return { | |
45 | willDrawChart: this.willDrawChart | |
46 | }; | |
47 | }; | |
48 | ||
49 | unzoom.prototype.willDrawChart = function(e) { | |
50 | var g = e.dygraph; | |
51 | // API note: | |
52 | // Consider adding a context parameter to activate and willDrawChart | |
53 | // that can be used for storage so I don't have to do things like | |
54 | // use up g.unzoomButton_. | |
55 | if (g.hasOwnProperty("unzoomButton_")) { | |
56 | return; | |
57 | } | |
58 | ||
59 | var elem = document.createElement("button"); | |
60 | elem.innerHTML = "Unzoom"; | |
61 | elem.style.display="none"; | |
62 | elem.style.position="absolute"; | |
63 | elem.style.top = '2px'; | |
64 | elem.style.left = '59px'; | |
65 | elem.style.zIndex = 1000; | |
66 | var parent = g.graphDiv; | |
67 | parent.insertBefore(elem, parent.firstChild); | |
68 | elem.onclick = function() { | |
69 | // TODO(konigsberg): doUnzoom_ is private. | |
70 | g.doUnzoom_(); | |
71 | } | |
72 | g.unzoomButton_ = elem; | |
73 | Dygraph.addEvent(parent, "mouseover", function() { | |
74 | g.unzoomButton_.style.display="block"; | |
75 | }); | |
76 | ||
77 | // TODO(konigsberg): Don't show unless the graph is zoomed. | |
78 | Dygraph.addEvent(parent, "mouseout", function() { | |
79 | g.unzoomButton_.style.display="none"; | |
80 | }); | |
81 | }; | |
82 | ||
83 | unzoom.prototype.destroy = function() { | |
84 | delete g.unzoomButton_; | |
85 | // TODO(konigsberg): Remove events installed above. | |
86 | }; | |
87 | ||
88 | return unzoom; | |
89 | ||
90 | })(); |