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seitime-frappe/docs/html/tree.html
Pratik Vyas d9404210e4 Sourced WebNotes Framework from Google Code.
2011-06-08 14:24:18 +05:30

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<h3><a href="index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference external" href="">Tree</a><ul>
<li><a class="reference external" href="#tree-treenode-classes">Tree &amp; TreeNode Classes</a></li>
<li><a class="reference external" href="#example">Example</a></li>
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<div class="section" id="tree">
<h1>Tree<a class="headerlink" href="#tree" title="Permalink to this headline"></a></h1>
<p>Tree widget renders a hierarchical tree where child nodes can be queried on demand. It can be useful to show
folder like structures, hierarchical menus etc.</p>
<div class="section" id="tree-treenode-classes">
<h2>Tree &amp; TreeNode Classes<a class="headerlink" href="#tree-treenode-classes" title="Permalink to this headline"></a></h2>
<dl class="class">
<dt id="Tree">
<em class="property">class </em><tt class="descname">Tree</tt><big>(</big><em>parent</em>, <em>width</em>, <em>do_animate</em><big>)</big><a class="headerlink" href="#Tree" title="Permalink to this definition"></a></dt>
<dd><p>Creates a new tree widget in the <cite>parent</cite>.
if <cite>do_animate</cite> is set, it will animate the expansion and closing of the tree</p>
<dl class="attribute">
<dt id="Tree.nodes">
<tt class="descname">nodes</tt><a class="headerlink" href="#Tree.nodes" title="Permalink to this definition"></a></dt>
<dd>dictionary of root nodes</dd></dl>
<dl class="attribute">
<dt id="Tree.allnodes">
<tt class="descname">allnodes</tt><a class="headerlink" href="#Tree.allnodes" title="Permalink to this definition"></a></dt>
<dd>dictionary of all nodes in the tree</dd></dl>
<dl class="method">
<dt id="Tree.addNode">
<tt class="descname">addNode</tt><big>(</big><em>parent</em>, <em>id</em>, <em>imagesrc</em>, <em>onclick</em>, <em>onexpand</em>, <em>opts</em>, <em>label</em><big>)</big><a class="headerlink" href="#Tree.addNode" title="Permalink to this definition"></a></dt>
<dd><p>create a new TreeNode</p>
<ul class="simple">
<li><cite>parent</cite> - parent TreeNode which the node is to be created. <cite>null</cite> for root node</li>
<li><cite>id</cite> - label (if not separately specified) of the new node</li>
<li><cite>imagesrc</cite> - icon of the node</li>
<li><cite>onclick</cite> - event to be called when node is clicked (selected)</li>
<li><cite>onexpand</cite> - event to ba called when node is expanded</li>
<li><cite>opts</cite> - node style options</li>
<li><cite>label</cite> - if label is separate from id</li>
</ul>
</dd></dl>
<dl class="method">
<dt id="Tree.collapse_all">
<tt class="descname">collapse_all</tt><big>(</big><big>)</big><a class="headerlink" href="#Tree.collapse_all" title="Permalink to this definition"></a></dt>
<dd>Collapse all nodes</dd></dl>
</dd></dl>
<dl class="class">
<dt id="TreeNode">
<em class="property">class </em><tt class="descname">TreeNode</tt><big>(</big><em>tree</em>, <em>parent</em>, <em>id</em>, <em>imagesrc</em>, <em>onclick</em>, <em>onexpand</em>, <em>opts</em>, <em>label</em><big>)</big><a class="headerlink" href="#TreeNode" title="Permalink to this definition"></a></dt>
<dd><p>This class is instantiated by <a title="Tree.addNode" class="reference internal" href="#Tree.addNode"><tt class="xref docutils literal"><span class="pre">Tree.addNode()</span></tt></a></p>
<dl class="attribute">
<dt id="TreeNode.parent">
<tt class="descname">parent</tt><a class="headerlink" href="#TreeNode.parent" title="Permalink to this definition"></a></dt>
<dd>Parent node or the Tree (in case of root node)</dd></dl>
<dl class="attribute">
<dt id="TreeNode.nodes">
<tt class="descname">nodes</tt><a class="headerlink" href="#TreeNode.nodes" title="Permalink to this definition"></a></dt>
<dd>Dictionary of child nodes by id</dd></dl>
<dl class="attribute">
<dt id="TreeNode.opts">
<tt class="descname">opts</tt><a class="headerlink" href="#TreeNode.opts" title="Permalink to this definition"></a></dt>
<dd><p>Style of the node. Default <cite>opts</cite> is:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">opts</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">show_exp_img</span><span class="p">:</span><span class="mi">1</span>
<span class="p">,</span><span class="n">show_icon</span><span class="p">:</span><span class="mi">1</span>
<span class="p">,</span><span class="n">label_style</span><span class="p">:{</span><span class="n">padding</span><span class="p">:</span><span class="s">&#39;2px&#39;</span><span class="p">,</span> <span class="n">cursor</span><span class="p">:</span> <span class="s">&#39;pointer&#39;</span><span class="p">,</span> <span class="n">fontSize</span><span class="p">:</span><span class="s">&#39;11px&#39;</span><span class="p">}</span>
<span class="p">,</span><span class="n">onselect_style</span><span class="p">:{</span><span class="n">fontWeight</span><span class="p">:</span> <span class="s">&#39;bold&#39;</span><span class="p">}</span>
<span class="p">,</span><span class="n">ondeselect_style</span><span class="p">:{</span><span class="n">fontWeight</span><span class="p">:</span> <span class="s">&#39;normal&#39;</span><span class="p">}</span>
<span class="p">}</span>
</pre></div>
</div>
</dd></dl>
<dl class="method">
<dt id="TreeNode.select">
<tt class="descname">select</tt><big>(</big><big>)</big><a class="headerlink" href="#TreeNode.select" title="Permalink to this definition"></a></dt>
<dd>Select the node</dd></dl>
<dl class="method">
<dt id="TreeNode.deselect">
<tt class="descname">deselect</tt><big>(</big><big>)</big><a class="headerlink" href="#TreeNode.deselect" title="Permalink to this definition"></a></dt>
<dd>Deselect the node</dd></dl>
<dl class="method">
<dt id="TreeNode.show_selected">
<tt class="descname">show_selected</tt><big>(</big><big>)</big><a class="headerlink" href="#TreeNode.show_selected" title="Permalink to this definition"></a></dt>
<dd>Show the style as selected</dd></dl>
<dl class="method">
<dt id="TreeNode.setlabel">
<tt class="descname">setlabel</tt><big>(</big><em>t</em><big>)</big><a class="headerlink" href="#TreeNode.setlabel" title="Permalink to this definition"></a></dt>
<dd>Set the label of the node</dd></dl>
<dl class="method">
<dt id="TreeNode.setcolor">
<tt class="descname">setcolor</tt><big>(</big><em>c</em><big>)</big><a class="headerlink" href="#TreeNode.setcolor" title="Permalink to this definition"></a></dt>
<dd>Set background color of the node</dd></dl>
<dl class="method">
<dt id="TreeNode.clear_child_nodes">
<tt class="descname">clear_child_nodes</tt><big>(</big><big>)</big><a class="headerlink" href="#TreeNode.clear_child_nodes" title="Permalink to this definition"></a></dt>
<dd>Remove all child nodes</dd></dl>
</dd></dl>
</div>
<div class="section" id="example">
<h2>Example<a class="headerlink" href="#example" title="Permalink to this headline"></a></h2>
<p>Example showing a tree in which the child nodes are queried from the server <cite>onexpand</cite>:</p>
<div class="highlight-python"><pre>// Tree
// ----------
pscript.load_cat_tree = function(){
//create category tree
if(!pscript.cat_tree){
pscript.make_cat_tree();
}
pscript.get_parent_category();
}
pscript.get_parent_category = function(){
if (pscript.cat_tree){
pscript.cat_tree.innerHTML = '';
}
var callback1 = function(r,rt){
cl = r.message;
var has_children = true; var imgsrc = 'images/icons/page.gif';
for(i=0; i&lt;cl.length;i++){
var n = pscript.cat_tree.addNode(null, cl[i][1],imgsrc, pscript.cat_tree.std_onclick, has_children ? pscript.cat_tree.std_onexp : null, null, cl[i][0]);
n.rec = cl[i]; n.rec.name = cl[i][0]; n.rec.label = cl[i][1];
n.rec.parent_category = '';
}
}
$c_obj('Ticket Control','get_root_category','',callback1);
}
pscript.make_cat_tree = function() {
var tree = new Tree(pscript.faq_cat_tree, '100%');
pscript.cat_tree = tree;
// on click
pscript.cat_tree.std_onclick = function(node) {
pscript.cur_node = node;
pscript.cur_node_val = node.rec.name;
//make faq list
pscript.make_faq_lst('frm_node');
}
// on expand
pscript.cat_tree.std_onexp = function(node) {
if(node.expanded_once)return;
$ds(node.loading_div);
var callback = function(r,rt) {
$dh(node.loading_div);
var n = pscript.cat_tree.allnodes[r.message.parent_category];
var cl = r.message.category;
for(var i=0;i&lt;cl.length;i++) {
var imgsrc='images/icons/page.gif';
var has_children = true;
var t = pscript.cat_tree.addNode(n, cl[i].name, imgsrc, pscript.cat_tree.std_onclick, has_children ? pscript.cat_tree.std_onexp : null, null, cl[i].category_name);
t.rec = cl[i];
t.rec.name = cl[i].name;
t.rec.label = cl[i].category_name;
t.parent_category = r.message.parent_category; //alert(t)
}
}
var arg = {}
arg['category'] = node.rec.name;
$c_obj('Ticket Control','get_categories',docstring(arg),callback);
}
}</pre>
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