NodeStore.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>The source code</title>
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<pre class="prettyprint lang-js"><span id='Ext-data-NodeStore'>/**
</span> * Node Store
* @private
*/
Ext.define('Ext.data.NodeStore', {
extend: 'Ext.data.Store',
alias: 'store.node',
requires: ['Ext.data.NodeInterface'],
<span id='Ext-data-NodeStore-cfg-node'> /**
</span> * @cfg {Ext.data.Model} node
* The Record you want to bind this Store to. Note that
* this record will be decorated with the Ext.data.NodeInterface if this is not the
* case yet.
*/
node: null,
<span id='Ext-data-NodeStore-cfg-recursive'> /**
</span> * @cfg {Boolean} recursive
* Set this to true if you want this NodeStore to represent
* all the descendents of the node in its flat data collection. This is useful for
* rendering a tree structure to a DataView and is being used internally by
* the TreeView. Any records that are moved, removed, inserted or appended to the
* node at any depth below the node this store is bound to will be automatically
* updated in this Store's internal flat data structure.
*/
recursive: false,
<span id='Ext-data-NodeStore-cfg-rootVisible'> /**
</span> * @cfg {Boolean} rootVisible
* False to not include the root node in this Stores collection.
*/
rootVisible: false,
<span id='Ext-data-NodeStore-cfg-treeStore'> /**
</span> * @cfg {Ext.data.TreeStore} treeStore
* The TreeStore that is used by this NodeStore's Ext.tree.View.
*/
constructor: function(config) {
var me = this,
node;
config = config || {};
Ext.apply(me, config);
//<debug>
if (Ext.isDefined(me.proxy)) {
Ext.Error.raise("A NodeStore cannot be bound to a proxy. Instead bind it to a record " +
"decorated with the NodeInterface by setting the node config.");
}
me.useModelWarning = false;
//</debug>
config.proxy = {type: 'proxy'};
me.callParent([config]);
node = me.node;
if (node) {
me.node = null;
me.setNode(node);
}
},
setNode: function(node) {
var me = this;
if (me.node && me.node != node) {
// We want to unbind our listeners on the old node
me.mun(me.node, {
expand: me.onNodeExpand,
collapse: me.onNodeCollapse,
append: me.onNodeAppend,
insert: me.onNodeInsert,
remove: me.onNodeRemove,
sort: me.onNodeSort,
scope: me
});
me.node = null;
}
if (node) {
Ext.data.NodeInterface.decorate(node.self);
me.removeAll();
if (me.rootVisible) {
me.add(node);
} else if (!node.isExpanded() && me.treeStore.autoLoad !== false) {
node.expand();
}
me.mon(node, {
expand: me.onNodeExpand,
collapse: me.onNodeCollapse,
append: me.onNodeAppend,
insert: me.onNodeInsert,
remove: me.onNodeRemove,
sort: me.onNodeSort,
scope: me
});
me.node = node;
if (node.isExpanded() && node.isLoaded()) {
me.onNodeExpand(node, node.childNodes, true);
}
}
},
onNodeSort: function(node, childNodes) {
var me = this;
if ((me.indexOf(node) !== -1 || (node === me.node && !me.rootVisible) && node.isExpanded())) {
me.onNodeCollapse(node, childNodes, true);
me.onNodeExpand(node, childNodes, true);
}
},
onNodeExpand: function(parent, records, suppressEvent) {
var me = this,
insertIndex = me.indexOf(parent) + 1,
ln = records ? records.length : 0,
i, record;
if (!me.recursive && parent !== me.node) {
return;
}
if (parent !== this.node && !me.isVisible(parent)) {
return;
}
if (!suppressEvent && me.fireEvent('beforeexpand', parent, records, insertIndex) === false) {
return;
}
if (ln) {
me.insert(insertIndex, records);
for (i = 0; i < ln; i++) {
record = records[i];
if (record.isExpanded()) {
if (record.isLoaded()) {
// Take a shortcut
me.onNodeExpand(record, record.childNodes, true);
}
else {
record.set('expanded', false);
record.expand();
}
}
}
}
if (!suppressEvent) {
me.fireEvent('expand', parent, records);
}
},
onNodeCollapse: function(parent, records, suppressEvent) {
var me = this,
ln = records.length,
collapseIndex = me.indexOf(parent) + 1,
i, record;
if (!me.recursive && parent !== me.node) {
return;
}
if (!suppressEvent && me.fireEvent('beforecollapse', parent, records, collapseIndex) === false) {
return;
}
for (i = 0; i < ln; i++) {
record = records[i];
me.remove(record);
if (record.isExpanded()) {
me.onNodeCollapse(record, record.childNodes, true);
}
}
if (!suppressEvent) {
me.fireEvent('collapse', parent, records, collapseIndex);
}
},
onNodeAppend: function(parent, node, index) {
var me = this,
refNode, sibling;
if (me.isVisible(node)) {
if (index === 0) {
refNode = parent;
} else {
sibling = node.previousSibling;
while (sibling.isExpanded() && sibling.lastChild) {
sibling = sibling.lastChild;
}
refNode = sibling;
}
me.insert(me.indexOf(refNode) + 1, node);
if (!node.isLeaf() && node.isExpanded()) {
if (node.isLoaded()) {
// Take a shortcut
me.onNodeExpand(node, node.childNodes, true);
}
else {
node.set('expanded', false);
node.expand();
}
}
}
},
onNodeInsert: function(parent, node, refNode) {
var me = this,
index = this.indexOf(refNode);
if (index != -1 && me.isVisible(node)) {
me.insert(index, node);
if (!node.isLeaf() && node.isExpanded()) {
if (node.isLoaded()) {
// Take a shortcut
me.onNodeExpand(node, node.childNodes, true);
}
else {
node.set('expanded', false);
node.expand();
}
}
}
},
onNodeRemove: function(parent, node, index) {
var me = this;
if (me.indexOf(node) != -1) {
if (!node.isLeaf() && node.isExpanded()) {
me.onNodeCollapse(node, node.childNodes, true);
}
me.remove(node);
}
},
isVisible: function(node) {
var parent = node.parentNode;
while (parent) {
if (parent === this.node && !this.rootVisible && parent.isExpanded()) {
return true;
}
if (this.indexOf(parent) === -1 || !parent.isExpanded()) {
return false;
}
parent = parent.parentNode;
}
return true;
}
});</pre>
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</html>