xpathBlink.js


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/* {{{
Copyright (c) 2008, anekos.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright notice,
       this list of conditions and the following disclaimer in the documentlet INFO =
<plugin name="xpathBlink" version="1.1.1"
        href="http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk/xpathBlink.js"
        summary="blink elements by XPath"
        xmlns="http://vimperator.org/namespaces/liberator">
    <author email="teramako@gmail.com">teramako</author>
    <license href="http://www.mozilla.org/MPL/MPL-1.1.txt">MPL 1.1</license>
    <project name="Vimperator" minVersion="2.2"/>
    <p>
        For test XPath.
    </p>
    <p>CAUTION: This plugin needs "DOM Inspector" addon.</p>
    <item>
        <tags>:xpathb :xpathblink</tags>
        <spec>:xpathb<oa>link</oa> <a>expression</a></spec>
        <description>
            <p>
                blink specified elements with XPath <a>expression</a>
            </p>
        </description>
    </item>
</plugin>;

let PLUGIN_INFO =
<VimperatorPlugin>
<name>{NAME}</name>
<description>blink elements by XPath</description>
<author mail="teramako@gmail.com" homepage="http://vimperator.g.hatena.ne.jp/teramako/">teramako</author>
<require type="extension" id="inspector@mozilla.org">DOM Inspector</require>
<license>MPL 1.1</license>
<version>1.1.1</version>
<minVersion>2.2</minVersion>
<maxVersion>2.3</maxVersion>
<updateURL>http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk/xpathBlink.js</updateURL>
<detail><![CDATA[
for test xpath

== Usage==
:xpathb[link] {expression}:
:xb {expression}
    blink specified elements with XPath {expression} 

== Caution ==
It's need "DOM Inspector" addon
]]></detail>
</VimperatorPlugin>;

(function(){
let extid = "inspector@mozilla.org";
if (!Application.extensions.has(extid) || !Application.extensions.get(extid).enabled){
    liberator.echomsg("DOM Inspector is not installed or enabled", 2);
    return;
}
let flasher = null;
function getFlasher(){
	if (!flasher){
		flasher = Cc['@mozilla.org/inspector/flasher;1'].createInstance(Ci.inIFlasher);
		flasher.color = '#FF0000';
		flasher.thickness = 2;
	}
	return flasher;
}
/**
 * @param {Node} aNode
 */
function blink(aNode){
	if (aNode.nodeType == 3) aNode = aNode.parentNode;
	let toggle = true;
	let flasher = getFlasher();
	function setOutline(){
		if (toggle){
			flasher.drawElementOutline(aNode);
		} else {
			flasher.repaintElement(aNode);
		}
		toggle = !toggle;
	}
	for (let i=1; i<7; ++i){
		setTimeout(setOutline, i * 100);
	}
}
commands.addUserCommand(['xpathb[link]','xb'],'XPath blink nodes',
	function(expression){
		let result;
		try {
			result = util.evaluateXPath(expression.string);
		} catch(e) {
			liberator.echoerr('XPath blink: ' + e);
		}
		if (!result.snapshotLength){
			liberator.echo('XPath blink: none');
			return;
		}
		for (let i=0; i<result.snapshotLength; i++){
			blink(result.snapshotItem(i));
		}
	},{}
);
})();

// vim: set fdm=marker sw=4 ts=4 et: