3 * Copyright(c) 2006-2009 Ext JS, LLC
5 * http://www.extjs.com/license
8 * @class Ext.tree.DefaultSelectionModel
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9 * @extends Ext.util.Observable
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10 * The default single selection for a TreePanel.
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12 Ext.tree.DefaultSelectionModel = function(config){
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13 this.selNode = null;
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17 * @event selectionchange
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18 * Fires when the selected node changes
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19 * @param {DefaultSelectionModel} this
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20 * @param {TreeNode} node the new selection
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25 * @event beforeselect
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26 * Fires before the selected node changes, return false to cancel the change
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27 * @param {DefaultSelectionModel} this
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28 * @param {TreeNode} node the new selection
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29 * @param {TreeNode} node the old selection
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34 Ext.apply(this, config);
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35 Ext.tree.DefaultSelectionModel.superclass.constructor.call(this);
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38 Ext.extend(Ext.tree.DefaultSelectionModel, Ext.util.Observable, {
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39 init : function(tree){
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41 tree.getTreeEl().on("keydown", this.onKeyDown, this);
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42 tree.on("click", this.onNodeClick, this);
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45 onNodeClick : function(node, e){
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51 * @param {TreeNode} node The node to select
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52 * @return {TreeNode} The selected node
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54 select : function(node){
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55 var last = this.selNode;
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57 node.ui.onSelectedChange(true);
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58 }else if(this.fireEvent('beforeselect', this, node, last) !== false){
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60 last.ui.onSelectedChange(false);
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62 this.selNode = node;
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63 node.ui.onSelectedChange(true);
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64 this.fireEvent("selectionchange", this, node, last);
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71 * @param {TreeNode} node The node to unselect
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73 unselect : function(node){
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74 if(this.selNode == node){
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75 this.clearSelections();
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80 * Clear all selections
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82 clearSelections : function(){
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83 var n = this.selNode;
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85 n.ui.onSelectedChange(false);
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86 this.selNode = null;
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87 this.fireEvent("selectionchange", this, null);
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93 * Get the selected node
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94 * @return {TreeNode} The selected node
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96 getSelectedNode : function(){
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97 return this.selNode;
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101 * Returns true if the node is selected
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102 * @param {TreeNode} node The node to check
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103 * @return {Boolean}
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105 isSelected : function(node){
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106 return this.selNode == node;
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110 * Selects the node above the selected node in the tree, intelligently walking the nodes
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111 * @return TreeNode The new selection
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113 selectPrevious : function(){
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114 var s = this.selNode || this.lastSelNode;
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118 var ps = s.previousSibling;
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120 if(!ps.isExpanded() || ps.childNodes.length < 1){
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121 return this.select(ps);
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123 var lc = ps.lastChild;
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124 while(lc && lc.isExpanded() && lc.childNodes.length > 0){
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127 return this.select(lc);
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129 } else if(s.parentNode && (this.tree.rootVisible || !s.parentNode.isRoot)){
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130 return this.select(s.parentNode);
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136 * Selects the node above the selected node in the tree, intelligently walking the nodes
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137 * @return TreeNode The new selection
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139 selectNext : function(){
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140 var s = this.selNode || this.lastSelNode;
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144 if(s.firstChild && s.isExpanded()){
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145 return this.select(s.firstChild);
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146 }else if(s.nextSibling){
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147 return this.select(s.nextSibling);
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148 }else if(s.parentNode){
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150 s.parentNode.bubble(function(){
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151 if(this.nextSibling){
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152 newS = this.getOwnerTree().selModel.select(this.nextSibling);
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161 onKeyDown : function(e){
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162 var s = this.selNode || this.lastSelNode;
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163 // undesirable, but required
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168 var k = e.getKey();
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176 this.selectPrevious();
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179 e.preventDefault();
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180 if(s.hasChildNodes()){
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181 if(!s.isExpanded()){
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183 }else if(s.firstChild){
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184 this.select(s.firstChild, e);
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189 e.preventDefault();
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190 if(s.hasChildNodes() && s.isExpanded()){
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192 }else if(s.parentNode && (this.tree.rootVisible || s.parentNode != this.tree.getRootNode())){
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193 this.select(s.parentNode, e);
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201 * @class Ext.tree.MultiSelectionModel
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202 * @extends Ext.util.Observable
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203 * Multi selection for a TreePanel.
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205 Ext.tree.MultiSelectionModel = function(config){
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206 this.selNodes = [];
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210 * @event selectionchange
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211 * Fires when the selected nodes change
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212 * @param {MultiSelectionModel} this
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213 * @param {Array} nodes Array of the selected nodes
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217 Ext.apply(this, config);
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218 Ext.tree.MultiSelectionModel.superclass.constructor.call(this);
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221 Ext.extend(Ext.tree.MultiSelectionModel, Ext.util.Observable, {
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222 init : function(tree){
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224 tree.getTreeEl().on("keydown", this.onKeyDown, this);
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225 tree.on("click", this.onNodeClick, this);
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228 onNodeClick : function(node, e){
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229 if(e.ctrlKey && this.isSelected(node)){
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230 this.unselect(node);
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232 this.select(node, e, e.ctrlKey);
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238 * @param {TreeNode} node The node to select
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239 * @param {EventObject} e (optional) An event associated with the selection
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240 * @param {Boolean} keepExisting True to retain existing selections
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241 * @return {TreeNode} The selected node
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243 select : function(node, e, keepExisting){
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244 if(keepExisting !== true){
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245 this.clearSelections(true);
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247 if(this.isSelected(node)){
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248 this.lastSelNode = node;
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251 this.selNodes.push(node);
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252 this.selMap[node.id] = node;
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253 this.lastSelNode = node;
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254 node.ui.onSelectedChange(true);
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255 this.fireEvent("selectionchange", this, this.selNodes);
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261 * @param {TreeNode} node The node to unselect
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263 unselect : function(node){
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264 if(this.selMap[node.id]){
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265 node.ui.onSelectedChange(false);
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266 var sn = this.selNodes;
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267 var index = sn.indexOf(node);
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269 this.selNodes.splice(index, 1);
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271 delete this.selMap[node.id];
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272 this.fireEvent("selectionchange", this, this.selNodes);
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277 * Clear all selections
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279 clearSelections : function(suppressEvent){
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280 var sn = this.selNodes;
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282 for(var i = 0, len = sn.length; i < len; i++){
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283 sn[i].ui.onSelectedChange(false);
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285 this.selNodes = [];
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287 if(suppressEvent !== true){
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288 this.fireEvent("selectionchange", this, this.selNodes);
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294 * Returns true if the node is selected
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295 * @param {TreeNode} node The node to check
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296 * @return {Boolean}
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298 isSelected : function(node){
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299 return this.selMap[node.id] ? true : false;
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303 * Returns an array of the selected nodes
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306 getSelectedNodes : function(){
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307 return this.selNodes;
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310 onKeyDown : Ext.tree.DefaultSelectionModel.prototype.onKeyDown,
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312 selectNext : Ext.tree.DefaultSelectionModel.prototype.selectNext,
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314 selectPrevious : Ext.tree.DefaultSelectionModel.prototype.selectPrevious
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