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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* Helper that binds the |this| object to a method to create a callback.
*/
Function.prototype.bind = function(thisObj) {
var func = this;
var args = Array.prototype.slice.call(arguments, 1);
return function() {
return func.apply(thisObj,
args.concat(Array.prototype.slice.call(arguments, 0)))
};
};
/**
* Sets the width (in pixels) on a DOM node.
*/
function setNodeWidth(node, widthPx) {
node.style.width = widthPx.toFixed(0) + "px";
}
/**
* Sets the height (in pixels) on a DOM node.
*/
function setNodeHeight(node, heightPx) {
node.style.height = heightPx.toFixed(0) + "px";
}
/**
* Sets the position and size of a DOM node (in pixels).
*/
function setNodePosition(node, leftPx, topPx, widthPx, heightPx) {
node.style.left = leftPx.toFixed(0) + "px";
node.style.top = topPx.toFixed(0) + "px";
setNodeWidth(node, widthPx);
setNodeHeight(node, heightPx);
}
/**
* Adds a node to |parentNode|, of type |tagName|.
*/
function addNode(parentNode, tagName) {
var elem = parentNode.ownerDocument.createElement(tagName);
parentNode.appendChild(elem);
return elem;
}
/**
* Adds text to node |parentNode|.
*/
function addTextNode(parentNode, text) {
var textNode = parentNode.ownerDocument.createTextNode(text);
parentNode.appendChild(textNode);
return textNode;
}
/**
* Adds or removes a CSS class to |node|.
*/
function changeClassName(node, classNameToAddOrRemove, isAdd) {
// Multiple classes can be separated by spaces.
var currentNames = node.className.split(" ");
if (isAdd) {
if (!(classNameToAddOrRemove in currentNames)) {
currentNames.push(classNameToAddOrRemove);
}
} else {
for (var i = 0; i < currentNames.length; ++i) {
if (currentNames[i] == classNameToAddOrRemove) {
currentNames.splice(i, 1);
break;
}
}
}
node.className = currentNames.join(" ");
}
function getKeyWithValue(map, value) {
for (key in map) {
if (map[key] == value)
return key;
}
return '?';
}
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