strong-arc
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A visual suite for the StrongLoop API Platform
763 lines (673 loc) • 20.1 kB
JavaScript
/*
* Copyright (C) 2007 Apple Inc. All rights reserved.
* Copyright (C) 2012 Google Inc. 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
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Contains diff method based on Javascript Diff Algorithm By John Resig
* http://ejohn.org/files/jsdiff.js (released under the MIT license).
*/
/**
* @param {number} offset
* @param {string} stopCharacters
* @param {!Node} stayWithinNode
* @param {string=} direction
* @return {!Range}
*/
Node.prototype.rangeOfWord = function(offset, stopCharacters, stayWithinNode, direction)
{
var startNode;
var startOffset = 0;
var endNode;
var endOffset = 0;
if (!stayWithinNode)
stayWithinNode = this;
if (!direction || direction === "backward" || direction === "both") {
var node = this;
while (node) {
if (node === stayWithinNode) {
if (!startNode)
startNode = stayWithinNode;
break;
}
if (node.nodeType === Node.TEXT_NODE) {
var start = (node === this ? (offset - 1) : (node.nodeValue.length - 1));
for (var i = start; i >= 0; --i) {
if (stopCharacters.indexOf(node.nodeValue[i]) !== -1) {
startNode = node;
startOffset = i + 1;
break;
}
}
}
if (startNode)
break;
node = node.traversePreviousNode(stayWithinNode);
}
if (!startNode) {
startNode = stayWithinNode;
startOffset = 0;
}
} else {
startNode = this;
startOffset = offset;
}
if (!direction || direction === "forward" || direction === "both") {
node = this;
while (node) {
if (node === stayWithinNode) {
if (!endNode)
endNode = stayWithinNode;
break;
}
if (node.nodeType === Node.TEXT_NODE) {
var start = (node === this ? offset : 0);
for (var i = start; i < node.nodeValue.length; ++i) {
if (stopCharacters.indexOf(node.nodeValue[i]) !== -1) {
endNode = node;
endOffset = i;
break;
}
}
}
if (endNode)
break;
node = node.traverseNextNode(stayWithinNode);
}
if (!endNode) {
endNode = stayWithinNode;
endOffset = stayWithinNode.nodeType === Node.TEXT_NODE ? stayWithinNode.nodeValue.length : stayWithinNode.childNodes.length;
}
} else {
endNode = this;
endOffset = offset;
}
var result = this.ownerDocument.createRange();
result.setStart(startNode, startOffset);
result.setEnd(endNode, endOffset);
return result;
}
/**
* @param {!Node=} stayWithin
* @return {?Node}
*/
Node.prototype.traverseNextTextNode = function(stayWithin)
{
var node = this.traverseNextNode(stayWithin);
if (!node)
return null;
while (node && node.nodeType !== Node.TEXT_NODE)
node = node.traverseNextNode(stayWithin);
return node;
}
/**
* @param {number} offset
* @return {!{container: !Node, offset: number}}
*/
Node.prototype.rangeBoundaryForOffset = function(offset)
{
var node = this.traverseNextTextNode(this);
while (node && offset > node.nodeValue.length) {
offset -= node.nodeValue.length;
node = node.traverseNextTextNode(this);
}
if (!node)
return { container: this, offset: 0 };
return { container: node, offset: offset };
}
/**
* @param {number|undefined} x
* @param {number|undefined} y
* @param {!Element=} relativeTo
*/
Element.prototype.positionAt = function(x, y, relativeTo)
{
var shift = {x: 0, y: 0};
if (relativeTo)
shift = relativeTo.boxInWindow(this.ownerDocument.defaultView);
if (typeof x === "number")
this.style.setProperty("left", (shift.x + x) + "px");
else
this.style.removeProperty("left");
if (typeof y === "number")
this.style.setProperty("top", (shift.y + y) + "px");
else
this.style.removeProperty("top");
}
/**
* @return {boolean}
*/
Element.prototype.isScrolledToBottom = function()
{
// This code works only for 0-width border.
// Both clientHeight and scrollHeight are rounded to integer values, so we tolerate
// one pixel error.
return Math.abs(this.scrollTop + this.clientHeight - this.scrollHeight) <= 1;
}
/**
* @param {!Node} fromNode
* @param {!Node} toNode
*/
function removeSubsequentNodes(fromNode, toNode)
{
for (var node = fromNode; node && node !== toNode; ) {
var nodeToRemove = node;
node = node.nextSibling;
nodeToRemove.remove();
}
}
/**
* @constructor
* @param {!Size} minimum
* @param {?Size=} preferred
*/
function Constraints(minimum, preferred)
{
/**
* @type {!Size}
*/
this.minimum = minimum;
/**
* @type {!Size}
*/
this.preferred = preferred || minimum;
if (this.minimum.width > this.preferred.width || this.minimum.height > this.preferred.height)
throw new Error("Minimum size is greater than preferred.");
}
/**
* @param {?Constraints} constraints
* @return {boolean}
*/
Constraints.prototype.isEqual = function(constraints)
{
return !!constraints && this.minimum.isEqual(constraints.minimum) && this.preferred.isEqual(constraints.preferred);
}
/**
* @param {!Constraints|number} value
* @return {!Constraints}
*/
Constraints.prototype.widthToMax = function(value)
{
if (typeof value === "number")
return new Constraints(this.minimum.widthToMax(value), this.preferred.widthToMax(value));
return new Constraints(this.minimum.widthToMax(value.minimum), this.preferred.widthToMax(value.preferred));
}
/**
* @param {!Constraints|number} value
* @return {!Constraints}
*/
Constraints.prototype.addWidth = function(value)
{
if (typeof value === "number")
return new Constraints(this.minimum.addWidth(value), this.preferred.addWidth(value));
return new Constraints(this.minimum.addWidth(value.minimum), this.preferred.addWidth(value.preferred));
}
/**
* @param {!Constraints|number} value
* @return {!Constraints}
*/
Constraints.prototype.heightToMax = function(value)
{
if (typeof value === "number")
return new Constraints(this.minimum.heightToMax(value), this.preferred.heightToMax(value));
return new Constraints(this.minimum.heightToMax(value.minimum), this.preferred.heightToMax(value.preferred));
}
/**
* @param {!Constraints|number} value
* @return {!Constraints}
*/
Constraints.prototype.addHeight = function(value)
{
if (typeof value === "number")
return new Constraints(this.minimum.addHeight(value), this.preferred.addHeight(value));
return new Constraints(this.minimum.addHeight(value.minimum), this.preferred.addHeight(value.preferred));
}
/**
* @param {?Element=} containerElement
* @return {!Size}
*/
Element.prototype.measurePreferredSize = function(containerElement)
{
containerElement = containerElement || document.body;
containerElement.appendChild(this);
this.positionAt(0, 0);
var result = new Size(this.offsetWidth, this.offsetHeight);
this.positionAt(undefined, undefined);
this.remove();
return result;
}
/**
* @param {!Event} event
* @return {boolean}
*/
Element.prototype.containsEventPoint = function(event)
{
var box = this.getBoundingClientRect();
return box.left < event.x && event.x < box.right &&
box.top < event.y && event.y < box.bottom;
}
/**
* @param {!Array.<string>} nameArray
* @return {?Node}
*/
Node.prototype.enclosingNodeOrSelfWithNodeNameInArray = function(nameArray)
{
for (var node = this; node && node !== this.ownerDocument; node = node.parentNode) {
for (var i = 0; i < nameArray.length; ++i) {
if (node.nodeName.toLowerCase() === nameArray[i].toLowerCase())
return node;
}
}
return null;
}
/**
* @param {string} nodeName
* @return {?Node}
*/
Node.prototype.enclosingNodeOrSelfWithNodeName = function(nodeName)
{
return this.enclosingNodeOrSelfWithNodeNameInArray([nodeName]);
}
/**
* @param {string} className
* @param {!Element=} stayWithin
* @return {?Element}
*/
Node.prototype.enclosingNodeOrSelfWithClass = function(className, stayWithin)
{
for (var node = this; node && node !== stayWithin && node !== this.ownerDocument; node = node.parentNode) {
if (node.nodeType === Node.ELEMENT_NODE && node.classList.contains(className))
return /** @type {!Element} */ (node);
}
return null;
}
/**
* @param {string} query
* @return {?Node}
*/
Element.prototype.query = function(query)
{
return this.ownerDocument.evaluate(query, this, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}
Element.prototype.removeChildren = function()
{
if (this.firstChild)
this.textContent = "";
}
/**
* @return {boolean}
*/
Element.prototype.isInsertionCaretInside = function()
{
var selection = window.getSelection();
if (!selection.rangeCount || !selection.isCollapsed)
return false;
var selectionRange = selection.getRangeAt(0);
return selectionRange.startContainer.isSelfOrDescendant(this);
}
/**
* @param {string} elementName
* @param {string=} className
* @return {!Element}
*/
Document.prototype.createElementWithClass = function(elementName, className)
{
var element = this.createElement(elementName);
if (className)
element.className = className;
return element;
}
/**
* @param {string} elementName
* @param {string=} className
* @return {!Element}
*/
Element.prototype.createChild = function(elementName, className)
{
var element = this.ownerDocument.createElementWithClass(elementName, className);
this.appendChild(element);
return element;
}
//begin strongloop
Element.prototype.createChildBefore = function(elementName, className, anchor){
var element = this.ownerDocument.createElementWithClass(elementName, className);
this.insertBefore(element, anchor);
return element;
}
//end strongloop
DocumentFragment.prototype.createChild = Element.prototype.createChild;
/**
* @param {string} text
* @return {!Text}
*/
Element.prototype.createTextChild = function(text)
{
var element = this.ownerDocument.createTextNode(text);
this.appendChild(element);
return element;
}
DocumentFragment.prototype.createTextChild = Element.prototype.createTextChild;
/**
* @param {...string} var_args
*/
Element.prototype.createTextChildren = function(var_args)
{
for (var i = 0, n = arguments.length; i < n; ++i)
this.createTextChild(arguments[i]);
}
DocumentFragment.prototype.createTextChildren = Element.prototype.createTextChildren;
/**
* @param {...!Element} var_args
*/
Element.prototype.appendChildren = function(var_args)
{
for (var i = 0, n = arguments.length; i < n; ++i)
this.appendChild(arguments[i]);
}
/**
* @return {number}
*/
Element.prototype.totalOffsetLeft = function()
{
return this.totalOffset().left;
}
/**
* @return {number}
*/
Element.prototype.totalOffsetTop = function()
{
return this.totalOffset().top;
}
/**
* @return {!{left: number, top: number}}
*/
Element.prototype.totalOffset = function()
{
var rect = this.getBoundingClientRect();
return { left: rect.left, top: rect.top };
}
/**
* @return {!{left: number, top: number}}
*/
Element.prototype.scrollOffset = function()
{
var curLeft = 0;
var curTop = 0;
for (var element = this; element; element = element.scrollParent) {
curLeft += element.scrollLeft;
curTop += element.scrollTop;
}
return { left: curLeft, top: curTop };
}
/**
* @constructor
* @param {number=} x
* @param {number=} y
* @param {number=} width
* @param {number=} height
*/
function AnchorBox(x, y, width, height)
{
this.x = x || 0;
this.y = y || 0;
this.width = width || 0;
this.height = height || 0;
}
/**
* @param {!AnchorBox} box
* @return {!AnchorBox}
*/
AnchorBox.prototype.relativeTo = function(box)
{
return new AnchorBox(
this.x - box.x, this.y - box.y, this.width, this.height);
}
/**
* @param {!Element} element
* @return {!AnchorBox}
*/
AnchorBox.prototype.relativeToElement = function(element)
{
return this.relativeTo(element.boxInWindow(element.ownerDocument.defaultView));
}
/**
* @param {?AnchorBox} anchorBox
* @return {boolean}
*/
AnchorBox.prototype.equals = function(anchorBox)
{
return !!anchorBox && this.x === anchorBox.x && this.y === anchorBox.y && this.width === anchorBox.width && this.height === anchorBox.height;
}
/**
* @param {!Window} targetWindow
* @return {!AnchorBox}
*/
Element.prototype.offsetRelativeToWindow = function(targetWindow)
{
var elementOffset = new AnchorBox();
var curElement = this;
var curWindow = this.ownerDocument.defaultView;
while (curWindow && curElement) {
elementOffset.x += curElement.totalOffsetLeft();
elementOffset.y += curElement.totalOffsetTop();
if (curWindow === targetWindow)
break;
curElement = curWindow.frameElement;
curWindow = curWindow.parent;
}
return elementOffset;
}
/**
* @param {!Window=} targetWindow
* @return {!AnchorBox}
*/
Element.prototype.boxInWindow = function(targetWindow)
{
targetWindow = targetWindow || this.ownerDocument.defaultView;
var anchorBox = this.offsetRelativeToWindow(window);
anchorBox.width = Math.min(this.offsetWidth, window.innerWidth - anchorBox.x);
anchorBox.height = Math.min(this.offsetHeight, window.innerHeight - anchorBox.y);
return anchorBox;
}
/**
* @param {string} text
*/
Element.prototype.setTextAndTitle = function(text)
{
this.textContent = text;
this.title = text;
}
KeyboardEvent.prototype.__defineGetter__("data", function()
{
// Emulate "data" attribute from DOM 3 TextInput event.
// See http://www.w3.org/TR/DOM-Level-3-Events/#events-Events-TextEvent-data
switch (this.type) {
case "keypress":
if (!this.ctrlKey && !this.metaKey)
return String.fromCharCode(this.charCode);
else
return "";
case "keydown":
case "keyup":
if (!this.ctrlKey && !this.metaKey && !this.altKey)
return String.fromCharCode(this.which);
else
return "";
}
});
/**
* @param {boolean=} preventDefault
*/
Event.prototype.consume = function(preventDefault)
{
this.stopImmediatePropagation();
if (preventDefault)
this.preventDefault();
this.handled = true;
}
/**
* @param {number=} start
* @param {number=} end
* @return {!Text}
*/
Text.prototype.select = function(start, end)
{
start = start || 0;
end = end || this.textContent.length;
if (start < 0)
start = end + start;
var selection = this.ownerDocument.defaultView.getSelection();
selection.removeAllRanges();
var range = this.ownerDocument.createRange();
range.setStart(this, start);
range.setEnd(this, end);
selection.addRange(range);
return this;
}
/**
* @return {?number}
*/
Element.prototype.selectionLeftOffset = function()
{
// Calculate selection offset relative to the current element.
var selection = window.getSelection();
if (!selection.containsNode(this, true))
return null;
var leftOffset = selection.anchorOffset;
var node = selection.anchorNode;
while (node !== this) {
while (node.previousSibling) {
node = node.previousSibling;
leftOffset += node.textContent.length;
}
node = node.parentNode;
}
return leftOffset;
}
/**
* @param {?Node} node
* @return {boolean}
*/
Node.prototype.isAncestor = function(node)
{
if (!node)
return false;
var currentNode = node.parentNode;
while (currentNode) {
if (this === currentNode)
return true;
currentNode = currentNode.parentNode;
}
return false;
}
/**
* @param {?Node} descendant
* @return {boolean}
*/
Node.prototype.isDescendant = function(descendant)
{
return !!descendant && descendant.isAncestor(this);
}
/**
* @param {?Node} node
* @return {boolean}
*/
Node.prototype.isSelfOrAncestor = function(node)
{
return !!node && (node === this || this.isAncestor(node));
}
/**
* @param {?Node} node
* @return {boolean}
*/
Node.prototype.isSelfOrDescendant = function(node)
{
return !!node && (node === this || this.isDescendant(node));
}
/**
* @param {!Node=} stayWithin
* @return {?Node}
*/
Node.prototype.traverseNextNode = function(stayWithin)
{
var node = this.firstChild;
if (node)
return node;
if (stayWithin && this === stayWithin)
return null;
node = this.nextSibling;
if (node)
return node;
node = this;
while (node && !node.nextSibling && (!stayWithin || !node.parentNode || node.parentNode !== stayWithin))
node = node.parentNode;
if (!node)
return null;
return node.nextSibling;
}
/**
* @param {!Node=} stayWithin
* @return {?Node}
*/
Node.prototype.traversePreviousNode = function(stayWithin)
{
if (stayWithin && this === stayWithin)
return null;
var node = this.previousSibling;
while (node && node.lastChild)
node = node.lastChild;
if (node)
return node;
return this.parentNode;
}
/**
* @param {*} text
* @param {string=} placeholder
* @return {boolean} true if was truncated
*/
Node.prototype.setTextContentTruncatedIfNeeded = function(text, placeholder)
{
// Huge texts in the UI reduce rendering performance drastically.
// Moreover, Blink/WebKit uses <unsigned short> internally for storing text content
// length, so texts longer than 65535 are inherently displayed incorrectly.
const maxTextContentLength = 65535;
if (typeof text === "string" && text.length > maxTextContentLength) {
this.textContent = typeof placeholder === "string" ? placeholder : text.trimEnd(maxTextContentLength);
return true;
}
this.textContent = text;
return false;
}
/**
* @return {boolean}
*/
function isEnterKey(event) {
// Check if in IME.
return event.keyCode !== 229 && event.keyIdentifier === "Enter";
}
function consumeEvent(e)
{
e.consume();
}