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Diffstat (limited to 'web/build/dom.js')
| -rw-r--r-- | web/build/dom.js | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/web/build/dom.js b/web/build/dom.js new file mode 100644 index 000000000..acea31f0d --- /dev/null +++ b/web/build/dom.js @@ -0,0 +1,433 @@ +/*
+Copyright (c) 2006 Yahoo! Inc. All rights reserved.
+version 0.9.0
+*/
+
+/**
+ * @class Provides helper methods for DOM elements.
+ */
+YAHOO.util.Dom = new function() {
+
+ /**
+ * Returns an HTMLElement reference
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @return {HTMLElement} A DOM reference to an HTML element.
+ */
+ this.get = function(el) {
+ if (typeof el == 'string') { // accept object or id
+ el = document.getElementById(el);
+ }
+
+ return el;
+ };
+
+ /**
+ * Normalizes currentStyle and ComputedStyle.
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @param {String} property The style property whose value is returned.
+ * @return {String} The current value of the style property.
+ */
+ this.getStyle = function(el, property) {
+ var value = null;
+ var dv = document.defaultView;
+
+ el = this.get(el);
+
+ if (property == 'opacity' && el.filters) {// IE opacity
+ value = 1;
+ try {
+ value = el.filters.item('DXImageTransform.Microsoft.Alpha').opacity / 100;
+ } catch(e) {
+ try {
+ value = el.filters.item('alpha').opacity / 100;
+ } catch(e) {}
+ }
+ }
+ else if (el.style[property]) {
+ value = el.style[property];
+ }
+ else if (el.currentStyle && el.currentStyle[property]) {
+ value = el.currentStyle[property];
+ }
+ else if ( dv && dv.getComputedStyle )
+ { // convert camelCase to hyphen-case
+
+ var converted = '';
+ for(i = 0, len = property.length;i < len; ++i) {
+ if (property.charAt(i) == property.charAt(i).toUpperCase()) {
+ converted = converted + '-' + property.charAt(i).toLowerCase();
+ } else {
+ converted = converted + property.charAt(i);
+ }
+ }
+
+ if (dv.getComputedStyle(el, '').getPropertyValue(converted)) {
+ value = dv.getComputedStyle(el, '').getPropertyValue(converted);
+ }
+ }
+
+ return value;
+ };
+
+ /**
+ * Wrapper for setting style properties of HTMLElements. Normalizes "opacity" across modern browsers.
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @param {String} property The style property to be set.
+ * @param {String} val The value to apply to the given property.
+ */
+ this.setStyle = function(el, property, val) {
+ el = this.get(el);
+ switch(property) {
+ case 'opacity' :
+ if (el.filters) {
+ el.style.filter = 'alpha(opacity=' + val * 100 + ')';
+
+ if (!el.currentStyle.hasLayout) {
+ el.style.zoom = 1;
+ }
+ } else {
+ el.style.opacity = val;
+ el.style['-moz-opacity'] = val;
+ el.style['-khtml-opacity'] = val;
+ }
+ break;
+ default :
+ el.style[property] = val;
+ }
+ };
+
+ /**
+ * Gets the current position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ */
+ this.getXY = function(el) {
+ el = this.get(el);
+
+ // has to be part of document to have pageXY
+ if (el.parentNode === null || this.getStyle(el, 'display') == 'none') {
+ return false;
+ }
+
+ /**
+ * Position of the html element (x, y)
+ * @private
+ * @type Array
+ */
+ var parent = null;
+ var pos = [];
+ var box;
+
+ if (el.getBoundingClientRect) { // IE
+ box = el.getBoundingClientRect();
+ var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
+ var scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
+
+ return [box.left + scrollLeft, box.top + scrollTop];
+ }
+ else if (document.getBoxObjectFor) { // gecko
+ box = document.getBoxObjectFor(el);
+ pos = [box.x, box.y];
+ }
+ else { // safari/opera
+ pos = [el.offsetLeft, el.offsetTop];
+ parent = el.offsetParent;
+ if (parent != el) {
+ while (parent) {
+ pos[0] += parent.offsetLeft;
+ pos[1] += parent.offsetTop;
+ parent = parent.offsetParent;
+ }
+ }
+
+ // opera & (safari absolute) incorrectly account for body offsetTop
+ var ua = navigator.userAgent.toLowerCase();
+ if (
+ ua.indexOf('opera') != -1
+ || ( ua.indexOf('safari') != -1 && this.getStyle(el, 'position') == 'absolute' )
+ ) {
+ pos[1] -= document.body.offsetTop;
+ }
+ }
+
+ if (el.parentNode) { parent = el.parentNode; }
+ else { parent = null; }
+
+ while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML') {
+ pos[0] -= parent.scrollLeft;
+ pos[1] -= parent.scrollTop;
+
+ if (parent.parentNode) { parent = parent.parentNode; }
+ else { parent = null; }
+ }
+
+ return pos;
+ };
+
+ /**
+ * Gets the current X position of an element based on page coordinates. The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ */
+ this.getX = function(el) {
+ return this.getXY(el)[0];
+ };
+
+ /**
+ * Gets the current Y position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ */
+ this.getY = function(el) {
+ return this.getXY(el)[1];
+ };
+
+ /**
+ * Set the position of an html element in page coordinates, regardless of how the element is positioned.
+ * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @param {array} pos Contains X & Y values for new position (coordinates are page-based)
+ */
+ this.setXY = function(el, pos, noRetry) {
+ el = this.get(el);
+ var pageXY = YAHOO.util.Dom.getXY(el);
+ if (pageXY === false) { return false; } // has to be part of doc to have pageXY
+
+ if (this.getStyle(el, 'position') == 'static') { // default to relative
+ this.setStyle(el, 'position', 'relative');
+ }
+
+ var delta = [
+ parseInt( YAHOO.util.Dom.getStyle(el, 'left'), 10 ),
+ parseInt( YAHOO.util.Dom.getStyle(el, 'top'), 10 )
+ ];
+
+ if ( isNaN(delta[0]) ) { delta[0] = 0; } // defalts to 'auto'
+ if ( isNaN(delta[1]) ) { delta[1] = 0; }
+
+ if (pos[0] !== null) { el.style.left = pos[0] - pageXY[0] + delta[0] + 'px'; }
+ if (pos[1] !== null) { el.style.top = pos[1] - pageXY[1] + delta[1] + 'px'; }
+
+ var newXY = this.getXY(el);
+
+ // if retry is true, try one more time if we miss
+ if (!noRetry && (newXY[0] != pos[0] || newXY[1] != pos[1]) ) {
+ this.setXY(el, pos, true);
+ }
+
+ return true;
+ };
+
+ /**
+ * Set the X position of an html element in page coordinates, regardless of how the element is positioned.
+ * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @param {Int} x to use as the X coordinate.
+ */
+ this.setX = function(el, x) {
+ return this.setXY(el, [x, null]);
+ };
+
+ /**
+ * Set the Y position of an html element in page coordinates, regardless of how the element is positioned.
+ * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @param {Int} Value to use as the Y coordinate.
+ */
+ this.setY = function(el, y) {
+ return this.setXY(el, [null, y]);
+ };
+
+ /**
+ * Returns the region position of the given element.
+ * The element must be part of the DOM tree to have a region (display:none or elements not appended return false).
+ * @param {String | HTMLElement} Accepts either a string to use as an ID for getting a DOM reference, or an actual DOM reference.
+ * @return {Region} A Region instance containing "top, left, bottom, right" member data.
+ */
+ this.getRegion = function(el) {
+ el = this.get(el);
+ return new YAHOO.util.Region.getRegion(el);
+ };
+
+ /**
+ * Returns the width of the client (viewport).
+ * @return {Int} The width of the viewable area of the page.
+ */
+ this.getClientWidth = function() {
+ return (
+ document.documentElement.offsetWidth
+ || document.body.offsetWidth
+ );
+ };
+
+ /**
+ * Returns the height of the client (viewport).
+ * @return {Int} The height of the viewable area of the page.
+ */
+ this.getClientHeight = function() {
+ return (
+ self.innerHeight
+ || document.documentElement.clientHeight
+ || document.body.clientHeight
+ );
+ };
+};
+
+/**
+ * @class A region is a representation of an object on a grid. It is defined
+ * by the top, right, bottom, left extents, so is rectangular by default. If
+ * other shapes are required, this class could be extended to support it.
+ *
+ * @param {int} t the top extent
+ * @param {int} r the right extent
+ * @param {int} b the bottom extent
+ * @param {int} l the left extent
+ * @constructor
+ */
+YAHOO.util.Region = function(t, r, b, l) {
+
+ /**
+ * The region's top extent
+ * @type int
+ */
+ this.top = t;
+
+ /**
+ * The region's right extent
+ * @type int
+ */
+ this.right = r;
+
+ /**
+ * The region's bottom extent
+ * @type int
+ */
+ this.bottom = b;
+
+ /**
+ * The region's left extent
+ * @type int
+ */
+ this.left = l;
+};
+
+/**
+ * Returns true if this region contains the region passed in
+ *
+ * @param {Region} region The region to evaluate
+ * @return {boolean} True if the region is contained with this region,
+ * else false
+ */
+YAHOO.util.Region.prototype.contains = function(region) {
+ return ( region.left >= this.left &&
+ region.right <= this.right &&
+ region.top >= this.top &&
+ region.bottom <= this.bottom );
+};
+
+/**
+ * Returns the area of the region
+ *
+ * @return {int} the region's area
+ */
+YAHOO.util.Region.prototype.getArea = function() {
+ return ( (this.bottom - this.top) * (this.right - this.left) );
+};
+
+/**
+ * Returns the region where the passed in region overlaps with this one
+ *
+ * @param {Region} region The region that intersects
+ * @return {Region} The overlap region, or null if there is no overlap
+ */
+YAHOO.util.Region.prototype.intersect = function(region) {
+ var t = Math.max( this.top, region.top );
+ var r = Math.min( this.right, region.right );
+ var b = Math.min( this.bottom, region.bottom );
+ var l = Math.max( this.left, region.left );
+
+ if (b >= t && r >= l) {
+ return new YAHOO.util.Region(t, r, b, l);
+ } else {
+ return null;
+ }
+};
+
+/**
+ * Returns the region representing the smallest region that can contain both
+ * the passed in region and this region.
+ *
+ * @param {Region} region The region that to create the union with
+ * @return {Region} The union region
+ */
+YAHOO.util.Region.prototype.union = function(region) {
+ var t = Math.min( this.top, region.top );
+ var r = Math.max( this.right, region.right );
+ var b = Math.max( this.bottom, region.bottom );
+ var l = Math.min( this.left, region.left );
+
+ return new YAHOO.util.Region(t, r, b, l);
+};
+
+/**
+ * toString
+ * @return string the region properties
+ */
+YAHOO.util.Region.prototype.toString = function() {
+ return ( "Region {" +
+ " t: " + this.top +
+ ", r: " + this.right +
+ ", b: " + this.bottom +
+ ", l: " + this.left +
+ "}" );
+}
+
+/**
+ * Returns a region that is occupied by the DOM element
+ *
+ * @param {HTMLElement} el The element
+ * @return {Region} The region that the element occupies
+ * @static
+ */
+YAHOO.util.Region.getRegion = function(el) {
+ var p = YAHOO.util.Dom.getXY(el);
+
+ var t = p[1];
+ var r = p[0] + el.offsetWidth;
+ var b = p[1] + el.offsetHeight;
+ var l = p[0];
+
+ return new YAHOO.util.Region(t, r, b, l);
+};
+
+/////////////////////////////////////////////////////////////////////////////
+
+
+/**
+ * @class
+ *
+ * A point is a region that is special in that it represents a single point on
+ * the grid.
+ *
+ * @param {int} x The X position of the point
+ * @param {int} y The Y position of the point
+ * @constructor
+ * @extends Region
+ */
+YAHOO.util.Point = function(x, y) {
+ /**
+ * The X position of the point
+ * @type int
+ */
+ this.x = x;
+
+ /**
+ * The Y position of the point
+ * @type int
+ */
+ this.y = y;
+
+ this.top = y;
+ this.right = x;
+ this.bottom = y;
+ this.left = x;
+};
+
+YAHOO.util.Point.prototype = new YAHOO.util.Region();
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