20f8df1291
data tables are going to need some work yet, but the other stuff seems to be working 100%
369 lines
22 KiB
HTML
369 lines
22 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>YUI Library Examples: Menu Family: Adding A Context Menu To A Table</title>
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<script type="text/javascript">
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//enable passthrough of errors from YUI Event:
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if ((typeof YAHOO !== "undefined") && (YAHOO.util) && (YAHOO.util.Event)) {
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YAHOO.util.Event.throwErrors = true;
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<div id="custom-doc" class="yui-t2">
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<div id="hd">
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<div id="ygunav">
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<p><em><a href="http://developer.yahoo.com/yui/">YUI Library Home</a></em></p>
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<form action="http://search.yahoo.com/search" id="sitesearchform">
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<input name="vs" type="hidden" value="developer.yahoo.com">
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<input name="vs" type="hidden" value="yuiblog.com">
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</form> </div>
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<div id="ygma"><a href="../../"><img src="../../assets/yui.gif" border="0" height="38"></a></div>
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<div id="pagetitle"><h1>YUI Library Examples: Menu Family: Adding A Context Menu To A Table</h1></div>
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</div>
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<div id="bd">
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<div id="yui-main">
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<div class="yui-b">
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<div class="yui-ge">
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<div class="yui-u first example">
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<div class="promo">
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<h1>Menu Family: Adding A Context Menu To A Table</h1>
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<div class="exampleIntro">
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<p>
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This example creates context menu for an HTML table and illustrates how the
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content of a ContextMenu instance can be replaced on the fly based on the
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element that triggered its display.
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</p>
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<p>
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<em>Please Note:</em> Opera users will need to do the following to use
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this example:
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</p>
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<ul id="operainstructions">
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<li>
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<em>Opera for Windows:</em> Hold down the control key and click with
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the left mouse button.
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</li>
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<li>
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<em>Opera for OS X:</em> Hold down the command key (⌘) and click
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with the left mouse button.
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</li>
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</ul>
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</div>
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<div class="example-container module newWindow">
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<div id="example-canvas" class="bd">
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<p class="newWindowButton yui-skin-sam"><span id="newWindowLink"><span class="first-child"><a href="tablecontextmenu_source.html" target="_blank">View example in new window.</a></span></span>
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</div>
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</div>
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</div>
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<p>
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When adding context menus to large data structures like a
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<code><table></code> or large list (<code><ol></code>
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or <code><ul></code>), it is recommended to bind a single
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YAHOO.widget.ContextMenu instance to the structure's root element, than to a set
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of its child nodes (<code><tr></code>s or <code><li></code>s).
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Doing so significantly improves the performance of a web page or
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application by reducing the number of "contextmenu" event handlers
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as well as the number of YAHOO.widget.ContextMenu instances in memory.
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</p>
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<p>
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Begin, by creating an <code><table></code> and giving
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<code><tr></code> elements that should have the same context menu a
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similar class name.
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</p>
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<p>
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Next, create an object literal that maps each class name to a set of
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MenuItem configuration properties.
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</p>
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<textarea name="code" class="JScript" cols="60" rows="1">
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/*
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Map of CSS class names to arrays of MenuItem
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configuration properties.
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*/
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var oContextMenuItems = {
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"type1": [
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"Context Menu 1, Item 1",
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{
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text: "Context Menu 1, Item 2",
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submenu: {
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id: "submenu1",
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lazyload: true,
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itemdata: [
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"Context Menu 1 Submenu, Item 1",
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"Context Menu 1 Submenu, Item 2",
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"Context Menu 1 Submenu, Item 3",
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"Context Menu 1 Submenu, Item 4"
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]
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}
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},
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"Context Menu 1, Item 3",
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"Context Menu 1, Item 4"
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],
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"type2": [
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"Context Menu 2, Item 1",
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"Context Menu 2, Item 2",
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"Context Menu 2, Item 3",
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"Context Menu 2, Item 4",
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"Context Menu 2, Item 5",
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"Context Menu 2, Item 6",
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"Context Menu 2, Item 7",
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"Context Menu 2, Item 8",
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"Context Menu 2, Item 9",
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"Context Menu 2, Item 10"
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],
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"type3": [
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"Context Menu 3, Item 1",
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"Context Menu 3, Item 2",
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"Context Menu 3, Item 3",
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"Context Menu 3, Item 4"
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],
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"type4": [
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"Context Menu 4, Item 1",
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"Context Menu 4, Item 2"
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],
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"type5": [
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"Context Menu 5, Item 1",
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"Context Menu 5, Item 2",
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"Context Menu 5, Item 3",
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"Context Menu 5, Item 4",
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"Context Menu 5, Item 5",
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"Context Menu 5, Item 6"
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]
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};
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</textarea>
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<p>
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Use the <a href="../../event/#onavailable"><code>onContentReady</code>
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method of the Event</a> utility to instantiate the ContextMenu as soon as the
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elements whose "contextmenu" event trigger its display are ready to be scripted.
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</p>
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<p>
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Lastly, add a "beforeShow" event handler to the ContextMenu instance.
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This event handler makes use of the "contextEventTarget" property to determine
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which <code><tr></code> element was the target of the "contextmenu"
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event. Once found, the <code><tr></code> element's class name is
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used to look up its corresponding menu items in the "oContextMenuItems"
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map, which are then added to the ContextMenu instance via the "addItems" method.
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</p>
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<textarea name="code" class="JScript" cols="60" rows="1">
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/*
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Initialize the ContextMenu instance when the the elements
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that trigger their display are ready to be scripted.
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*/
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YAHOO.util.Event.onContentReady("dataset", function () {
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var Dom = YAHOO.util.Dom;
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var oSelectedTR; // The currently selected TR
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/*
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"beforeshow" event handler for the ContextMenu instance -
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replaces the content of the ContextMenu instance based
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on the CSS class name of the <tr> element that triggered
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its display.
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*/
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function onContextMenuBeforeShow(p_sType, p_aArgs) {
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var aMenuItems,
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aClasses;
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if (this.getRoot() == this) {
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/*
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Get the <tr> that was the target of the
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"contextmenu" event.
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*/
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oSelectedTR = oTarget.nodeName.toUpperCase() == "TR" ?
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oTarget : Dom.getAncestorByTagName(oTarget, "TR");
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/*
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Get the array of MenuItems for the CSS class name from
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the "oContextMenuItems" map.
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*/
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if (Dom.hasClass(oSelectedTR, "odd")) {
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aClasses = oSelectedTR.className.split(" ");
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aMenuItems = oContextMenuItems[aClasses[0]];
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}
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else {
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aMenuItems = oContextMenuItems[YAHOO.lang.trim(oSelectedTR.className)];
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}
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// Remove the existing content from the ContentMenu instance
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this.clearContent();
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// Add the new set of items to the ContentMenu instance
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this.addItems(aMenuItems);
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// Render the ContextMenu instance with the new content
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this.render();
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/*
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Highlight the <tr> element in the table that was
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the target of the "contextmenu" event.
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*/
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Dom.addClass(oSelectedTR, "selected");
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}
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}
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/*
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"hide" event handler for the ContextMenu - used to
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clear the selected <tr> element in the table.
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*/
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function onContextMenuHide(p_sType, p_aArgs) {
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if (this.getRoot() == this && oSelectedTR) {
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Dom.removeClass(oSelectedTR, "selected");
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}
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}
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/*
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Instantiate a ContextMenu: The first argument passed to
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the constructor is the id of the element to be created; the
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second is an object literal of configuration properties.
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*/
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var oContextMenu = new YAHOO.widget.ContextMenu("contextmenu", {
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trigger: "dataset",
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lazyload: true
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});
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/*
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Subscribe to the ContextMenu instance's "beforeshow" and
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"hide" events.
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*/
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oContextMenu.subscribe("beforeShow", onContextMenuBeforeShow);
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oContextMenu.subscribe("hide", onContextMenuHide);
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});
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</textarea>
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</div>
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<div class="yui-u">
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<div id="examples">
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<h3 class='firstContent'>Menu Family Examples:</h3>
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<div id="exampleToc">
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<ul>
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<li><a href='../menu/example01.html'>Basic Menu From Markup</a></li><li><a href='../menu/example02.html'>Basic Menu From JavaScript</a></li><li><a href='../menu/example03.html'>Grouped Menu Items Using Markup</a></li><li><a href='../menu/example04.html'>Grouped Menu Items Using JavaScript</a></li><li><a href='../menu/example05.html'>Grouped Menu Items With Titles From Markup</a></li><li><a href='../menu/example06.html'>Grouped Menu Items With Titles From JavaScript</a></li><li><a href='../menu/example07.html'>Multi-tiered Menu From Markup</a></li><li><a href='../menu/example08.html'>Multi-tiered Menu From JavaScript</a></li><li><a href='../menu/example09.html'>Handling Menu Click Events</a></li><li><a href='../menu/example10.html'>Listening For Menu Events</a></li><li><a href='../menu/example11.html'>MenuItem Configuration Properties</a></li><li><a href='../menu/example12.html'>Setting Menu Configuration Properties At Runtime</a></li><li><a href='../menu/leftnavfrommarkup.html'>Website Left Nav With Submenus Built From Markup</a></li><li><a href='../menu/leftnavfromjs.html'>Website Left Nav With Submenus From JavaScript</a></li><li><a href='../menu/topnavfrommarkup.html'>Website Top Nav With Submenus Built From Markup</a></li><li><a href='../menu/topnavfromjs.html'>Website Top Nav With Submenus From JavaScript</a></li><li><a href='../menu/leftnavfrommarkupwithanim.html'>Website Left Nav Using Animation With Submenus Built From Markup</a></li><li><a href='../menu/leftnavfromjswithanim.html'>Website Left Nav Using Animation With Submenus From JavaScript</a></li><li><a href='../menu/topnavfrommarkupwithanim.html'>Website Top Nav Using Animation With Submenus Built From Markup</a></li><li><a href='../menu/topnavfromjswithanim.html'>Website Top Nav Using Animation With Submenus From JavaScript</a></li><li><a href='../menu/contextmenu.html'>Context Menu</a></li><li class='selected'><a href='../menu/tablecontextmenu.html'>Adding A Context Menu To A Table</a></li><li><a href='../menu/treeviewcontextmenu.html'>Adding A Context Menu To A TreeView</a></li><li><a href='../menu/programsmenu.html'>OS-Style Programs Menu</a></li><li><a href='../menu/applicationmenubar.html'>Application Menubar</a></li><li><a href='../menu/menuwaiaria.html'>Using the Menu ARIA Plugin</a></li><li><a href='../button/button-ariaplugin.html'>Using the Button ARIA Plugin (included with examples for Button Control)</a></li><li><a href='../datatable/dt_contextmenu.html'>Context Menu Integration (included with examples for DataTable Control)</a></li><li><a href='../button/btn_example07.html'>Menu Buttons (included with examples for Button Control)</a></li><li><a href='../button/btn_example08.html'>Split Buttons (included with examples for Button Control)</a></li><li><a href='../button/btn_example11.html'>Color Picker Button (included with examples for Button Control)</a></li><li><a href='../button/btn_example12.html'>Fixed Width Menu Button (included with examples for Button Control)</a></li><li><a href='../button/btn_example14.html'>Slider Button (included with examples for Button Control)</a></li><li><a href='../layout/menu_layout.html'>Layout with Menu Controls (included with examples for Layout Manager)</a></li><li><a href='../profilerviewer/pv-api.html'>Using the ProfilerViewer API while Profiling the YUI Menu Control (included with examples for ProfilerViewer Control (beta))</a></li> </ul>
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</div>
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</div>
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<div id="module">
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<h3>More Menu Family Resources:</h3>
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<ul>
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<li><a href="http://developer.yahoo.com/yui/menu/">User's Guide</a> (external)</li>
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<li><a href="../../docs/module_menu.html">API Documentation</a></li>
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<li><a href="http://yuiblog.com/assets/pdf/cheatsheets/menu.pdf">Cheat Sheet PDF</a> (external)</li></ul>
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</div>
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</div>
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</div>
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</div>
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</div>
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<div class="yui-b" id="tocWrapper">
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<!-- TABLE OF CONTENTS -->
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<div id="toc">
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<ul>
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<li class="sect first">Yahoo! UI Library</li><li class="item"><a title="The Yahoo! User Interface Library (YUI)" href="http://developer.yahoo.com/yui/">Home (external)</a></li><li class="item"><a title="The Yahoo! User Interface Blog" href="http://yuiblog.com">YUIBlog (external)</a></li><li class="item"><a title="The Yahoo! Group YDN-JavaScript hosts the YUI community forum" href="http://tech.groups.yahoo.com/group/ydn-javascript/">YUI Discussion Forum (external)</a></li><li class="item"><a title="The YUI Library can be downloaded from SourceForge" href="http://sourceforge.net/projects/yui/">YUI on Sourceforge (external)</a></li><li class="item"><a title="Instantly searchable API documentation for the entire YUI library." href="../../docs/index.html">API Documentation</a></li><li class="item"><a title="Examples of every YUI utility and control in action" href="../../examples/">Functional Examples</a></li><li class="item"><a title="Videos and podcasts from the YUI Team and from the Yahoo! frontend engineering community." href="http://developer.yahoo.com/yui/theater/">YUI Theater (external)</a></li><li class="item"><a title="YUI is free and open, offered under a BSD license." href="http://developer.yahoo.com/yui/license.html">YUI License (external)</a></li><li class="sect">YUI Functional Examples</li><li class="item"><a title="The YUI Animation Utility - Functional Examples" href="../../examples/animation/index.html">Animation</a></li><li class="item"><a title="The YUI AutoComplete Control - Functional Examples" href="../../examples/autocomplete/index.html">AutoComplete</a></li><li class="item"><a title="The YUI Browser History Manager - Functional Examples" href="../../examples/history/index.html">Browser History Manager</a></li><li class="item"><a title="The YUI Button Control - Functional Examples" href="../../examples/button/index.html">Button</a></li><li class="item"><a title="The YUI Calendar Control - Functional Examples" href="../../examples/calendar/index.html">Calendar</a></li><li class="item"><a title="The YUI Carousel Control - Functional Examples" href="../../examples/carousel/index.html">Carousel</a></li><li class="item"><a title="The YUI Charts Control - Functional Examples" href="../../examples/charts/index.html">Charts (experimental)</a></li><li class="item"><a title="The YUI Color Picker Control - Functional Examples" href="../../examples/colorpicker/index.html">Color Picker</a></li><li class="item"><a title="The YUI Cookie Utility - Functional Examples" href="../../examples/cookie/index.html">Cookie</a></li><li class="item"><a title="The YUI Connection Manager (AJAX) - Functional Examples" href="../../examples/connection/index.html">Connection Manager</a></li><li class="item"><a title="The YUI Container Family (Module, Overlay, Tooltip, Panel, Dialog, SimpleDialog) - Functional Examples" href="../../examples/container/index.html">Container</a></li><li class="item"><a title="The YUI DataTable Control - Functional Examples" href="../../examples/datatable/index.html">DataTable</a></li><li class="item"><a title="The YUI Dom Collection - Functional Examples" href="../../examples/dom/index.html">Dom</a></li><li class="item"><a title="The YUI Drag & Drop Utility - Functional Examples" href="../../examples/dragdrop/index.html">Drag & Drop</a></li><li class="item"><a title="The YUI Event Utility - Functional Examples" href="../../examples/event/index.html">Event</a></li><li class="item"><a title="The YUI Get Utility - Functional Examples" href="../../examples/get/index.html">Get</a></li><li class="item"><a title="The YUI ImageCropper Control - Functional Examples" href="../../examples/imagecropper/index.html">ImageCropper</a></li><li class="item"><a title="The YUI ImageLoader Utility - Functional Examples" href="../../examples/imageloader/index.html">ImageLoader</a></li><li class="item"><a title="The YUI JSON Utility - Functional Examples" href="../../examples/json/index.html">JSON</a></li><li class="item"><a title="The YUI Layout Manager - Functional Examples" href="../../examples/layout/index.html">Layout Manager</a></li><li class="item"><a title="The YUI Logger Control - Functional Examples" href="../../examples/logger/index.html">Logger</a></li><li class="selected "><a title="The YUI Menu Control - Functional Examples" href="../../examples/menu/index.html">Menu</a></li><li class="item"><a title="The YUI Paginator - Functional Examples" href="../../examples/paginator/index.html">Paginator</a></li><li class="item"><a title="The YUI Profiler Utility - Functional Examples" href="../../examples/profiler/index.html">Profiler</a></li><li class="item"><a title="The YUI ProfileViewer Control - Functional Examples" href="../../examples/profilerviewer/index.html">ProfilerViewer</a></li><li class="item"><a title="The YUI Resize Utility - Functional Examples" href="../../examples/resize/index.html">Resize</a></li><li class="item"><a title="The YUI Rich Text Editor - Functional Examples" href="../../examples/editor/index.html">Rich Text Editor</a></li><li class="item"><a title="The YUI Selector Utility - Functional Examples" href="../../examples/selector/index.html">Selector</a></li><li class="item"><a title="The YUI Slider Control - Functional Examples" href="../../examples/slider/index.html">Slider</a></li><li class="item"><a title="The YUI TabView Control - Functional Examples" href="../../examples/tabview/index.html">TabView</a></li><li class="item"><a title="The YUI TreeView Control - Functional Examples" href="../../examples/treeview/index.html">TreeView</a></li><li class="item"><a title="The YUI Uploader Utility - Functional Examples" href="../../examples/uploader/index.html">Uploader (experimental)</a></li><li class="item"><a title="The YUI YAHOO Global Object - Functional Examples" href="../../examples/yahoo/index.html">YAHOO Global Object</a></li><li class="item"><a title="The YUI Loader Utility - Functional Examples" href="../../examples/yuiloader/index.html">YUI Loader</a></li><li class="item"><a title="The YUI Test Utility - Functional Examples" href="../../examples/yuitest/index.html">YUI Test</a></li><li class="item"><a title="YUI Reset CSS - Functional Examples" href="../../examples/reset/index.html">Reset CSS</a></li><li class="item"><a title="YUI Base CSS - Functional Examples" href="../../examples/base/index.html">Base CSS</a></li><li class="item"><a title="YUI Fonts CSS - Functional Examples" href="../../examples/fonts/index.html">Fonts CSS</a></li><li class="item"><a title="YUI Grids CSS - Functional Examples" href="../../examples/grids/index.html">Grids CSS</a></li><li class="sect">YUI Articles on the YUI Website</li><li class="item"><a title="Answers to Frequently Asked Questions about the YUI Library" href="http://developer.yahoo.com/yui/articles/faq/">YUI FAQ (external)</a></li><li class="item"><a title="Yahoo!'s philosophy of Graded Browser Support" href="http://developer.yahoo.com/yui/articles/gbs/">Graded Browser Support (external)</a></li><li class="item"><a title="Reporting Bugs and Making Feature Requests for YUI Components" href="http://developer.yahoo.com/yui/articles/reportingbugs/">Bug Reports/Feature Requests (external)</a></li><li class="item"><a title="Serve YUI source files from Yahoo! -- free, fast, and simple" href="http://developer.yahoo.com/yui/articles/hosting/">Serving YUI Files from Yahoo! (external)</a></li><li class="item"><a title="Best practices for working with web services while protecting user privacy" href="http://developer.yahoo.com/security/">Security Best Practices (external)</a></li></ul>
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