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<pre class="prettyprint lang-js"><span id='Ext-selection-TreeModel'>/**
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</span> * Adds custom behavior for left/right keyboard navigation for use with a tree.
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* Depends on the view having an expand and collapse method which accepts a
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* record. This selection model is created by default for {@link Ext.tree.Panel}.
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*/
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Ext.define('Ext.selection.TreeModel', {
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extend: 'Ext.selection.RowModel',
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alias: 'selection.treemodel',
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<span id='Ext-selection-TreeModel-cfg-pruneRemoved'> /**
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</span> * @cfg {Boolean} pruneRemoved @hide
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*/
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constructor: function(config) {
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this.callParent(arguments);
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// If pruneRemoved is required, we must listen to the *TreeStore* to know when nodes
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// are added and removed
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if (this.pruneRemoved) {
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this.pruneRemoved = false;
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this.pruneRemovedNodes = true;
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}
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},
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<span id='Ext-selection-TreeModel-method-bindStore'> // binds the store to the selModel.
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</span> bindStore: function(store, initial) {
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var me = this;
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me.callParent(arguments);
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// TreePanel should have injected a reference to the TreeStore so that we can
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// listen for node removal.
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if (me.pruneRemovedNodes) {
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me.view.mon(me.treeStore, {
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remove: me.onNodeRemove,
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scope: me
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});
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}
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},
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<span id='Ext-selection-TreeModel-method-onNodeRemove'> onNodeRemove: function(parent, node, isMove) {
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</span> // deselection of deleted records done in base Model class
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if (!isMove) {
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this.deselectDeletedRecords([node]);
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}
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},
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<span id='Ext-selection-TreeModel-method-onKeyRight'> onKeyRight: function(e, t) {
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</span> this.navExpand(e, t);
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},
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<span id='Ext-selection-TreeModel-method-navExpand'> navExpand: function(e, t) {
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</span> var focused = this.getLastFocused(),
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view = this.view;
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if (focused) {
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// tree node is already expanded, go down instead
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// this handles both the case where we navigate to firstChild and if
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// there are no children to the nextSibling
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if (focused.isExpanded()) {
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this.onKeyDown(e, t);
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// if its not a leaf node, expand it
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} else if (focused.isExpandable()) {
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// If we are the normal side of a locking pair, only the tree view can do expanding
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if (!view.isTreeView) {
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view = view.lockingPartner;
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}
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view.expand(focused);
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}
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}
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},
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<span id='Ext-selection-TreeModel-method-onKeyLeft'> onKeyLeft: function(e, t) {
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</span> this.navCollapse(e, t);
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},
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<span id='Ext-selection-TreeModel-method-navCollapse'> navCollapse: function(e, t) {
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</span> var me = this,
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focused = this.getLastFocused(),
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view = this.view,
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parentNode;
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if (focused) {
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parentNode = focused.parentNode;
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// if focused node is already expanded, collapse it
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if (focused.isExpanded()) {
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// If we are the normal side of a locking pair, only the tree view can do collapsing
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if (!view.isTreeView) {
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view = view.lockingPartner;
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}
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view.collapse(focused);
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// has a parentNode and its not root
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// TODO: this needs to cover the case where the root isVisible
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} else if (parentNode && !parentNode.isRoot()) {
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// Select a range of records when doing multiple selection.
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if (e.shiftKey) {
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me.selectRange(parentNode, focused, e.ctrlKey, 'up');
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me.setLastFocused(parentNode);
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// just move focus, not selection
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} else if (e.ctrlKey) {
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me.setLastFocused(parentNode);
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// select it
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} else {
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me.select(parentNode);
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}
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}
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}
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},
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<span id='Ext-selection-TreeModel-method-onKeySpace'> onKeySpace: function(e, t) {
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</span> if (e.record.data.checked != null) {
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this.toggleCheck(e);
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} else {
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this.callParent(arguments);
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}
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},
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<span id='Ext-selection-TreeModel-method-onKeyEnter'> onKeyEnter: function(e, t) {
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</span> if (e.record.data.checked != null) {
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this.toggleCheck(e);
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} else {
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this.callParent(arguments);
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}
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},
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<span id='Ext-selection-TreeModel-method-toggleCheck'> toggleCheck: function(e) {
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</span> var view = this.view,
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selected = this.getLastSelected();
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e.stopEvent();
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if (selected) {
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// If we are the normal side of a locking pair, only the tree view can do on heckChange
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if (!view.isTreeView) {
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view = view.lockingPartner;
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}
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view.onCheckChange(selected);
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}
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}
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});
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</pre>
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