mirror of
https://bitbucket.org/wisemapping/wisemapping-open-source.git
synced 2024-11-26 07:44:56 +01:00
273 lines
8.2 KiB
JavaScript
273 lines
8.2 KiB
JavaScript
/*
|
|
* Copyright [2011] [wisemapping]
|
|
*
|
|
* Licensed under WiseMapping Public License, Version 1.0 (the "License").
|
|
* It is basically the Apache License, Version 2.0 (the "License") plus the
|
|
* "powered by wisemapping" text requirement on every single page;
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the license at
|
|
*
|
|
* http://www.wisemapping.org/license
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
core.Utils =
|
|
{
|
|
isDefined: function(val)
|
|
{
|
|
return val !== null && val !== undefined;
|
|
},
|
|
escapeInvalidTags: function (text)
|
|
{
|
|
//todo:Pablo. scape invalid tags in a text
|
|
return text;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* http://kevlindev.com/tutorials/javascript/inheritance/index.htm
|
|
* A function used to extend one class with another
|
|
*
|
|
* @param {Object} subClass
|
|
* The inheriting class, or subclass
|
|
* @param {Object} baseClass
|
|
* The class from which to inherit
|
|
*/
|
|
objects = {};
|
|
objects.extend = function(subClass, baseClass) {
|
|
function inheritance() {
|
|
}
|
|
|
|
inheritance.prototype = baseClass.prototype;
|
|
|
|
subClass.prototype = new inheritance();
|
|
subClass.prototype.constructor = subClass;
|
|
subClass.baseConstructor = baseClass;
|
|
subClass.superClass = baseClass.prototype;
|
|
};
|
|
|
|
core.assert = function(assert, message)
|
|
{
|
|
if (!assert)
|
|
{
|
|
var stack;
|
|
try
|
|
{
|
|
null.eval();
|
|
} catch(e)
|
|
{
|
|
stack = e;
|
|
}
|
|
wLogger.error(message + "," + stack);
|
|
// core.Logger.logError(message + "," + stack);
|
|
}
|
|
|
|
};
|
|
|
|
|
|
Math.sign = function(value)
|
|
{
|
|
return (value >= 0) ? 1 : -1;
|
|
};
|
|
|
|
|
|
// Extensions ....
|
|
function $import(src) {
|
|
var scriptElem = document.createElement('script');
|
|
scriptElem.setAttribute('src', src);
|
|
scriptElem.setAttribute('type', 'text/javascript');
|
|
document.getElementsByTagName('head')[0].appendChild(scriptElem);
|
|
}
|
|
|
|
/**
|
|
* Retrieve the mouse position.
|
|
*/
|
|
core.Utils.getMousePosition = function(event)
|
|
{
|
|
var xcoord = -1;
|
|
var ycoord = -1;
|
|
|
|
if (!event) {
|
|
if (window.event) {
|
|
//Internet Explorer
|
|
event = window.event;
|
|
} else {
|
|
//total failure, we have no way of referencing the event
|
|
throw "Could not obtain mouse position";
|
|
}
|
|
}
|
|
if(core.Utils.isDefined(event.$extended)){
|
|
event = event.event;
|
|
}
|
|
if (typeof( event.pageX ) == 'number') {
|
|
//most browsers
|
|
xcoord = event.pageX;
|
|
ycoord = event.pageY;
|
|
} else if (typeof( event.clientX ) == 'number') {
|
|
//Internet Explorer and older browsers
|
|
//other browsers provide this, but follow the pageX/Y branch
|
|
xcoord = event.clientX;
|
|
ycoord = event.clientY;
|
|
var badOldBrowser = ( window.navigator.userAgent.indexOf('Opera') + 1 ) ||
|
|
( window.ScriptEngine && ScriptEngine().indexOf('InScript') + 1 ) ||
|
|
( navigator.vendor == 'KDE' );
|
|
if (!badOldBrowser) {
|
|
if (document.body && ( document.body.scrollLeft || document.body.scrollTop )) {
|
|
//IE 4, 5 & 6 (in non-standards compliant mode)
|
|
xcoord += document.body.scrollLeft;
|
|
ycoord += document.body.scrollTop;
|
|
} else if (document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop )) {
|
|
//IE 6 (in standards compliant mode)
|
|
xcoord += document.documentElement.scrollLeft;
|
|
ycoord += document.documentElement.scrollTop;
|
|
}
|
|
}
|
|
} else {
|
|
throw "Could not obtain mouse position";
|
|
}
|
|
|
|
|
|
return {x:xcoord,y:ycoord};
|
|
};
|
|
|
|
|
|
/**
|
|
* Calculate the position of the passed element.
|
|
*/
|
|
core.Utils.workOutDivElementPosition = function(divElement)
|
|
{
|
|
var curleft = 0;
|
|
var curtop = 0;
|
|
if (divElement.offsetParent) {
|
|
curleft = divElement.offsetLeft;
|
|
curtop = divElement.offsetTop;
|
|
while (divElement = divElement.offsetParent) {
|
|
curleft += divElement.offsetLeft;
|
|
curtop += divElement.offsetTop;
|
|
}
|
|
}
|
|
return {x:curleft,y:curtop};
|
|
};
|
|
|
|
|
|
core.Utils.innerXML = function(/*Node*/node) {
|
|
// summary:
|
|
// Implementation of MS's innerXML function.
|
|
if (node.innerXML) {
|
|
return node.innerXML;
|
|
// string
|
|
} else if (node.xml) {
|
|
return node.xml;
|
|
// string
|
|
} else if (typeof XMLSerializer != "undefined") {
|
|
return (new XMLSerializer()).serializeToString(node);
|
|
// string
|
|
}
|
|
};
|
|
|
|
core.Utils.createDocument = function() {
|
|
// summary:
|
|
// cross-browser implementation of creating an XML document object.
|
|
var doc = null;
|
|
var _document = window.document;
|
|
if (window.ActiveXObject) {
|
|
var prefixes = [ "MSXML2", "Microsoft", "MSXML", "MSXML3" ];
|
|
for (var i = 0; i < prefixes.length; i++) {
|
|
try {
|
|
doc = new ActiveXObject(prefixes[i] + ".XMLDOM");
|
|
} catch(e) { /* squelch */
|
|
}
|
|
;
|
|
|
|
if (doc) {
|
|
break;
|
|
}
|
|
}
|
|
} else if ((_document.implementation) &&
|
|
(_document.implementation.createDocument)) {
|
|
doc = _document.implementation.createDocument("", "", null);
|
|
}
|
|
|
|
return doc;
|
|
// DOMDocument
|
|
};
|
|
|
|
core.Utils.createDocumentFromText = function(/*string*/str, /*string?*/mimetype) {
|
|
// summary:
|
|
// attempts to create a Document object based on optional mime-type,
|
|
// using str as the contents of the document
|
|
if (!mimetype) {
|
|
mimetype = "text/xml";
|
|
}
|
|
if (window.DOMParser)
|
|
{
|
|
var parser = new DOMParser();
|
|
return parser.parseFromString(str, mimetype);
|
|
// DOMDocument
|
|
} else if (window.ActiveXObject) {
|
|
var domDoc = core.Utils.createDocument();
|
|
if (domDoc) {
|
|
domDoc.async = false;
|
|
domDoc.loadXML(str);
|
|
return domDoc;
|
|
// DOMDocument
|
|
}
|
|
}
|
|
return null;
|
|
};
|
|
|
|
core.Utils.calculateRelationShipPointCoordinates = function(topic,controlPoint){
|
|
var size = topic.getSize();
|
|
var position = topic.getPosition();
|
|
var m = (position.y-controlPoint.y)/(position.x-controlPoint.x);
|
|
var y,x;
|
|
var gap = 5;
|
|
if(controlPoint.y>position.y+(size.height/2)){
|
|
y = position.y+(size.height/2)+gap;
|
|
x = position.x-((position.y-y)/m);
|
|
if(x>position.x+(size.width/2)){
|
|
x=position.x+(size.width/2);
|
|
}else if(x<position.x-(size.width/2)){
|
|
x=position.x-(size.width/2);
|
|
}
|
|
}else if(controlPoint.y<position.y-(size.height/2)){
|
|
y = position.y-(size.height/2) - gap;
|
|
x = position.x-((position.y-y)/m);
|
|
if(x>position.x+(size.width/2)){
|
|
x=position.x+(size.width/2);
|
|
}else if(x<position.x-(size.width/2)){
|
|
x=position.x-(size.width/2);
|
|
}
|
|
}else if(controlPoint.x<(position.x-size.width/2)){
|
|
x = position.x-(size.width/2) -gap;
|
|
y = position.y-(m*(position.x-x));
|
|
}else{
|
|
x = position.x+(size.width/2) + gap;
|
|
y = position.y-(m*(position.x-x));
|
|
}
|
|
|
|
return new core.Point(x,y);
|
|
};
|
|
|
|
core.Utils.calculateDefaultControlPoints = function(srcPos, tarPos){
|
|
var y = srcPos.y-tarPos.y;
|
|
var x = srcPos.x-tarPos.x;
|
|
var m = y/x;
|
|
var l = Math.sqrt(y*y+x*x)/3;
|
|
var fix=1;
|
|
if(srcPos.x>tarPos.x){
|
|
fix=-1;
|
|
}
|
|
|
|
var x1 = srcPos.x + Math.sqrt(l*l/(1+(m*m)))*fix;
|
|
var y1 = m*(x1-srcPos.x)+srcPos.y;
|
|
var x2 = tarPos.x + Math.sqrt(l*l/(1+(m*m)))*fix*-1;
|
|
var y2= m*(x2-tarPos.x)+tarPos.y;
|
|
|
|
return [new core.Point(x1,y1),new core.Point(x2,y2)];
|
|
}; |