Mercurial > snowl

annotate extension/content/sidebar.js @ 11:40c49a0e9e34

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update the list of sources when the user unsubscribes from one
author Myk Melez <myk@mozilla.org>
date Fri, 11 Apr 2008 15:08:33 -0700
parents 64defcf896f1
children dfd64db41b8a
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8
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1 var gBrowserWindow = window.QueryInterface(Ci.nsIInterfaceRequestor).
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2 getInterface(Ci.nsIWebNavigation).
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3 QueryInterface(Ci.nsIDocShellTreeItem).
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4 rootTreeItem.
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5 QueryInterface(Ci.nsIInterfaceRequestor).
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6 getInterface(Ci.nsIDOMWindow);
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7
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8 SourcesView = {
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9 // Observer Service
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10 get _obsSvc() {
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11 let obsSvc = Cc["@mozilla.org/observer-service;1"].
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12 getService(Ci.nsIObserverService);
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13 delete this._obsSvc;
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14 this._obsSvc = obsSvc;
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15 return this._obsSvc;
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16 },
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17
8
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18 get _tree() {
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19 let tree = document.getElementById("sourcesView");
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20 delete this._tree;
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21 this._tree = tree;
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22 return this._tree;
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23 },
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24
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25 get _children() {
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26 let children = this._tree.getElementsByTagName("treechildren")[0];
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27 delete this._children;
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28 this._children = children;
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29 return this._children;
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30 },
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31
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32 init: function() {
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33 this._obsSvc.addObserver(this, "sources:changed", true);
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34 this._rebuildView();
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35 },
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36
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37 //**************************************************************************//
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38 // XPCOM Interface Implementations
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39
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40 // nsISupports
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41 QueryInterface: function(aIID) {
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42 if (aIID.equals(Ci.nsIObserver) ||
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43 aIID.equals(Ci.nsISupportsWeakReference) ||
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44 aIID.equals(Ci.nsISupports))
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45 return this;
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46
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47 throw Cr.NS_ERROR_NO_INTERFACE;
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48 },
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49
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50 // nsIObserver
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51 observe: function(subject, topic, data) {
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52 switch (topic) {
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53 case "sources:changed":
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54 this._rebuildView();
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55 break;
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56 }
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57 },
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58
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59 _rebuildView: function() {
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60 let statementString = "SELECT title, id FROM sources ORDER BY title";
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61
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62 let statement = SnowlDatastore.createStatement(statementString);
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63
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64 // Empty the view.
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65 while (this._children.hasChildNodes())
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66 this._children.removeChild(this._children.lastChild);
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67
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68 // Rebuild the view.
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69 this._addItem(null, "All");
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70 while (statement.step())
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71 this._addItem(statement.row.id, statement.row.title);
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72
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73 // Select the subscription that the messages view is currently displaying.
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74 for (let i = 0; i < this._children.childNodes.length; i++) {
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75 let item = this._children.childNodes[i];
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76 if (item.sourceID == gBrowserWindow.SnowlView.sourceID) {
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77 this._tree.view.selection.select(i);
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78 break;
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79 }
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80 }
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81 },
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82
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83 _addItem: function(aSourceID, aTitle) {
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84 let item = document.createElement("treeitem");
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85 item.sourceID = aSourceID;
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86 let row = document.createElement("treerow");
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87
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88 let titleCell = document.createElement("treecell");
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89 titleCell.setAttribute("label", aTitle);
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90
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91 row.appendChild(titleCell);
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92 item.appendChild(row);
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93 this._children.appendChild(item);
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94 },
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95
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96 onSelect: function(aEvent) {
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97 if (this._tree.currentIndex == -1)
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98 return;
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99 let sourceID = this._children.childNodes[this._tree.currentIndex].sourceID;
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100 gBrowserWindow.SnowlView.setSource(sourceID);
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101 },
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102
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103 onUnsubscribe: function(aEvent) {
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104 let sourceID = this._tree.view.getItemAtIndex(this._tree.currentIndex).sourceID;
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105
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106 SnowlDatastore.dbConnection.beginTransaction();
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107 try {
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108 SnowlDatastore.dbConnection.executeSimpleSQL("DELETE FROM metadata WHERE messageID IN (SELECT id FROM messages WHERE sourceID = " + sourceID + ")");
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109 SnowlDatastore.dbConnection.executeSimpleSQL("DELETE FROM parts WHERE messageID IN (SELECT id FROM messages WHERE sourceID = " + sourceID + ")");
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110 SnowlDatastore.dbConnection.executeSimpleSQL("DELETE FROM messages WHERE sourceID = " + sourceID);
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111 SnowlDatastore.dbConnection.executeSimpleSQL("DELETE FROM sources WHERE id = " + sourceID);
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112 SnowlDatastore.dbConnection.commitTransaction();
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113 }
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114 catch(ex) {
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115 SnowlDatastore.dbConnection.rollbackTransaction();
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116 throw ex;
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117 }
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118
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119 this._rebuildView();
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120 }
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121
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122 };
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123
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124 window.addEventListener("load", function() { SourcesView.init() }, false);