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<pre class="prettyprint lang-js"><span id='Ext-selection-TreeModel'>/**
</span> * Adds custom behavior for left/right keyboard navigation for use with a tree.
* Depends on the view having an expand and collapse method which accepts a
* record.
*
* @private
*/
Ext.define('Ext.selection.TreeModel', {
extend: 'Ext.selection.RowModel',
alias: 'selection.treemodel',
// typically selection models prune records from the selection
// model when they are removed, because the TreeView constantly
// adds/removes records as they are expanded/collapsed
pruneRemoved: false,
onKeyRight: function(e, t) {
var focused = this.getLastFocused(),
view = this.view;
if (focused) {
// tree node is already expanded, go down instead
// this handles both the case where we navigate to firstChild and if
// there are no children to the nextSibling
if (focused.isExpanded()) {
this.onKeyDown(e, t);
// if its not a leaf node, expand it
} else if (focused.isExpandable()) {
view.expand(focused);
}
}
},
onKeyLeft: function(e, t) {
var focused = this.getLastFocused(),
view = this.view,
viewSm = view.getSelectionModel(),
parentNode, parentRecord;
if (focused) {
parentNode = focused.parentNode;
// if focused node is already expanded, collapse it
if (focused.isExpanded()) {
view.collapse(focused);
// has a parentNode and its not root
// TODO: this needs to cover the case where the root isVisible
} else if (parentNode && !parentNode.isRoot()) {
// Select a range of records when doing multiple selection.
if (e.shiftKey) {
viewSm.selectRange(parentNode, focused, e.ctrlKey, 'up');
viewSm.setLastFocused(parentNode);
// just move focus, not selection
} else if (e.ctrlKey) {
viewSm.setLastFocused(parentNode);
// select it
} else {
viewSm.select(parentNode);
}
}
}
},
onKeySpace: function(e, t) {
this.toggleCheck(e);
},
onKeyEnter: function(e, t) {
this.toggleCheck(e);
},
toggleCheck: function(e){
e.stopEvent();
var selected = this.getLastSelected();
if (selected) {
this.view.onCheckChange(selected);
}
}
});
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