wisemapping-open-source/web2d/src/main/javascript/Group.js
2011-10-08 20:36:47 -03:00

127 lines
4.0 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.
*/
/**
* A group object can be used to collect shapes.
*/
web2d.Group = new Class({
Extends: web2d.Element,
initialize : function(attributes) {
var peer = web2d.peer.Toolkit.createGroup();
var defaultAttributes = {width:50, height:50, x:50, y:50,coordOrigin:'0 0',coordSize:'50 50'};
for (var key in attributes) {
defaultAttributes[key] = attributes[key];
}
this.parent(peer, defaultAttributes);
},
/**
* Remove an element as a child to the object.
*/
removeChild : function(element) {
if (!$defined(element)) {
throw "Child element can not be null";
}
if (element == this) {
throw "It's not possible to add the group as a child of itself";
}
var elementType = element.getType();
if (elementType == null) {
throw "It seems not to be an element ->" + element;
}
this._peer.removeChild(element._peer);
},
/**
* Appends an element as a child to the object.
*/
appendChild : function(element) {
if (!$defined(element)) {
throw "Child element can not be null";
}
if (element == this) {
throw "It's not posible to add the group as a child of itself";
}
var elementType = element.getType();
if (elementType == null) {
throw "It seems not to be an element ->" + element;
}
if (elementType == "Workspace") {
throw "A group can not have a workspace as a child";
}
this._peer.appendChild(element._peer);
},
getType : function() {
return "Group";
},
/**
* The group element is a containing blocks for this content - they define a CSS2 "block level box".
* Inside the containing block a local coordinate system is defined for any sub-elements using the coordsize and coordorigin attributes.
* All CSS2 positioning information is expressed in terms of this local coordinate space.
* Consequently CSS2 position attributes (left, top, width, height and so on) have no unit specifier -
* they are simple numbers, not CSS length quantities.
*/
setCoordSize : function(width, height) {
this._peer.setCoordSize(width, height);
},
setCoordOrigin : function(x, y) {
this._peer.setCoordOrigin(x, y);
},
getCoordOrigin : function() {
return this._peer.getCoordOrigin();
},
getSize : function() {
return this._peer.getSize();
},
setFill : function(color, opacity) {
throw "Unsupported operation. Fill can not be set to a group";
},
setStroke : function(width, style, color, opacity) {
throw "Unsupported operation. Stroke can not be set to a group";
},
getCoordSize : function() {
return this._peer.getCoordSize();
},
appendDomChild : function(DomElement) {
if (!$defined(DomElement)) {
throw "Child element can not be null";
}
if (DomElement == this) {
throw "It's not possible to add the group as a child of itself";
}
this._peer._native.appendChild(DomElement);
}
});