/*!
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* Ext JS Library 3.1.0
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* Copyright(c) 2006-2009 Ext JS, LLC
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* licensing@extjs.com
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.tree.DefaultSelectionModel
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* @extends Ext.util.Observable
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* The default single selection for a TreePanel.
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*/
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Ext.tree.DefaultSelectionModel = function(config){
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this.selNode = null;
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this.addEvents(
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/**
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* @event selectionchange
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* Fires when the selected node changes
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* @param {DefaultSelectionModel} this
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* @param {TreeNode} node the new selection
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*/
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'selectionchange',
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/**
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* @event beforeselect
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* Fires before the selected node changes, return false to cancel the change
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* @param {DefaultSelectionModel} this
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* @param {TreeNode} node the new selection
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* @param {TreeNode} node the old selection
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*/
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'beforeselect'
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);
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Ext.apply(this, config);
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Ext.tree.DefaultSelectionModel.superclass.constructor.call(this);
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};
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Ext.extend(Ext.tree.DefaultSelectionModel, Ext.util.Observable, {
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init : function(tree){
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this.tree = tree;
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tree.mon(tree.getTreeEl(), 'keydown', this.onKeyDown, this);
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tree.on('click', this.onNodeClick, this);
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},
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onNodeClick : function(node, e){
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this.select(node);
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},
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/**
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* Select a node.
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* @param {TreeNode} node The node to select
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* @return {TreeNode} The selected node
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*/
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select : function(node, /* private*/ selectNextNode){
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// If node is hidden, select the next node in whatever direction was being moved in.
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if (!Ext.fly(node.ui.wrap).isVisible() && selectNextNode) {
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return selectNextNode.call(this, node);
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}
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var last = this.selNode;
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if(node == last){
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node.ui.onSelectedChange(true);
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}else if(this.fireEvent('beforeselect', this, node, last) !== false){
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if(last && last.ui){
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last.ui.onSelectedChange(false);
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}
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this.selNode = node;
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node.ui.onSelectedChange(true);
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this.fireEvent('selectionchange', this, node, last);
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}
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return node;
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},
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/**
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* Deselect a node.
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* @param {TreeNode} node The node to unselect
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* @param {Boolean} silent True to stop the selectionchange event from firing.
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*/
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unselect : function(node, silent){
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if(this.selNode == node){
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this.clearSelections(silent);
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}
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},
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/**
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* Clear all selections
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* @param {Boolean} silent True to stop the selectionchange event from firing.
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*/
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clearSelections : function(silent){
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var n = this.selNode;
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if(n){
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n.ui.onSelectedChange(false);
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this.selNode = null;
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if(silent !== true){
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this.fireEvent('selectionchange', this, null);
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}
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}
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return n;
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},
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/**
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* Get the selected node
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* @return {TreeNode} The selected node
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*/
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getSelectedNode : function(){
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return this.selNode;
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},
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/**
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* Returns true if the node is selected
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* @param {TreeNode} node The node to check
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* @return {Boolean}
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*/
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isSelected : function(node){
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return this.selNode == node;
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},
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/**
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* Selects the node above the selected node in the tree, intelligently walking the nodes
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* @return TreeNode The new selection
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*/
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selectPrevious : function(/* private */ s){
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if(!(s = s || this.selNode || this.lastSelNode)){
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return null;
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}
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// Here we pass in the current function to select to indicate the direction we're moving
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var ps = s.previousSibling;
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if(ps){
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if(!ps.isExpanded() || ps.childNodes.length < 1){
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return this.select(ps, this.selectPrevious);
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} else{
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var lc = ps.lastChild;
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while(lc && lc.isExpanded() && Ext.fly(lc.ui.wrap).isVisible() && lc.childNodes.length > 0){
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lc = lc.lastChild;
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}
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return this.select(lc, this.selectPrevious);
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}
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} else if(s.parentNode && (this.tree.rootVisible || !s.parentNode.isRoot)){
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return this.select(s.parentNode, this.selectPrevious);
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}
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return null;
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},
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/**
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* Selects the node above the selected node in the tree, intelligently walking the nodes
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* @return TreeNode The new selection
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*/
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selectNext : function(/* private */ s){
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if(!(s = s || this.selNode || this.lastSelNode)){
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return null;
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}
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// Here we pass in the current function to select to indicate the direction we're moving
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if(s.firstChild && s.isExpanded() && Ext.fly(s.ui.wrap).isVisible()){
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return this.select(s.firstChild, this.selectNext);
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}else if(s.nextSibling){
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return this.select(s.nextSibling, this.selectNext);
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}else if(s.parentNode){
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var newS = null;
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s.parentNode.bubble(function(){
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if(this.nextSibling){
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newS = this.getOwnerTree().selModel.select(this.nextSibling, this.selectNext);
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return false;
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}
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});
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return newS;
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}
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return null;
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},
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onKeyDown : function(e){
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var s = this.selNode || this.lastSelNode;
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// undesirable, but required
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var sm = this;
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if(!s){
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return;
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}
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var k = e.getKey();
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switch(k){
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case e.DOWN:
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e.stopEvent();
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this.selectNext();
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break;
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case e.UP:
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e.stopEvent();
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this.selectPrevious();
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break;
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case e.RIGHT:
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e.preventDefault();
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if(s.hasChildNodes()){
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if(!s.isExpanded()){
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s.expand();
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}else if(s.firstChild){
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this.select(s.firstChild, e);
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}
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}
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break;
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case e.LEFT:
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e.preventDefault();
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if(s.hasChildNodes() && s.isExpanded()){
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s.collapse();
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}else if(s.parentNode && (this.tree.rootVisible || s.parentNode != this.tree.getRootNode())){
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this.select(s.parentNode, e);
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}
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break;
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};
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}
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});
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/**
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* @class Ext.tree.MultiSelectionModel
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* @extends Ext.util.Observable
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* Multi selection for a TreePanel.
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*/
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Ext.tree.MultiSelectionModel = function(config){
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this.selNodes = [];
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this.selMap = {};
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this.addEvents(
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/**
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* @event selectionchange
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* Fires when the selected nodes change
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* @param {MultiSelectionModel} this
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* @param {Array} nodes Array of the selected nodes
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*/
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'selectionchange'
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);
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Ext.apply(this, config);
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Ext.tree.MultiSelectionModel.superclass.constructor.call(this);
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};
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Ext.extend(Ext.tree.MultiSelectionModel, Ext.util.Observable, {
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init : function(tree){
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this.tree = tree;
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tree.mon(tree.getTreeEl(), 'keydown', this.onKeyDown, this);
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tree.on('click', this.onNodeClick, this);
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},
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onNodeClick : function(node, e){
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if(e.ctrlKey && this.isSelected(node)){
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this.unselect(node);
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}else{
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this.select(node, e, e.ctrlKey);
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}
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},
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/**
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* Select a node.
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* @param {TreeNode} node The node to select
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* @param {EventObject} e (optional) An event associated with the selection
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* @param {Boolean} keepExisting True to retain existing selections
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* @return {TreeNode} The selected node
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*/
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select : function(node, e, keepExisting){
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if(keepExisting !== true){
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this.clearSelections(true);
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}
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if(this.isSelected(node)){
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this.lastSelNode = node;
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return node;
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}
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this.selNodes.push(node);
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this.selMap[node.id] = node;
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this.lastSelNode = node;
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node.ui.onSelectedChange(true);
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this.fireEvent('selectionchange', this, this.selNodes);
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return node;
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},
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/**
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* Deselect a node.
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* @param {TreeNode} node The node to unselect
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*/
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unselect : function(node){
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if(this.selMap[node.id]){
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node.ui.onSelectedChange(false);
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var sn = this.selNodes;
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var index = sn.indexOf(node);
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if(index != -1){
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this.selNodes.splice(index, 1);
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}
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delete this.selMap[node.id];
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this.fireEvent('selectionchange', this, this.selNodes);
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}
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},
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/**
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* Clear all selections
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*/
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clearSelections : function(suppressEvent){
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var sn = this.selNodes;
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if(sn.length > 0){
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for(var i = 0, len = sn.length; i < len; i++){
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sn[i].ui.onSelectedChange(false);
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}
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this.selNodes = [];
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this.selMap = {};
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if(suppressEvent !== true){
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this.fireEvent('selectionchange', this, this.selNodes);
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}
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}
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},
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/**
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* Returns true if the node is selected
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* @param {TreeNode} node The node to check
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* @return {Boolean}
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*/
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isSelected : function(node){
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return this.selMap[node.id] ? true : false;
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},
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/**
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* Returns an array of the selected nodes
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* @return {Array}
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*/
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getSelectedNodes : function(){
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return this.selNodes;
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},
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onKeyDown : Ext.tree.DefaultSelectionModel.prototype.onKeyDown,
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selectNext : Ext.tree.DefaultSelectionModel.prototype.selectNext,
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selectPrevious : Ext.tree.DefaultSelectionModel.prototype.selectPrevious
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});
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