001    // Copyright Oct 16, 2006 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    package org.apache.tapestry.dojo.html;
015    
016    import org.apache.tapestry.IMarkupWriter;
017    import org.apache.tapestry.IRequestCycle;
018    import org.apache.tapestry.IScript;
019    import org.apache.tapestry.TapestryUtils;
020    import org.apache.tapestry.dojo.AbstractWidget;
021    import org.apache.tapestry.json.JSONObject;
022    
023    import java.util.HashMap;
024    import java.util.Map;
025    
026    
027    /**
028     * Implementation of dojo Dialog widget.
029     * 
030     */
031    public abstract class Dialog extends AbstractWidget
032    {
033        public abstract boolean isHidden();
034        public abstract void setHidden(boolean hidden);
035        
036        public abstract String getBackgroundColor();
037        
038        public abstract float getOpacity();
039        
040        public void show()
041        {
042            setHidden(false);
043        }
044    
045        public void hide()
046        {
047            setHidden(true);
048        }
049        
050        /**
051         * {@inheritDoc}
052         */
053        public void renderWidget(IMarkupWriter writer, IRequestCycle cycle)
054        {
055            if (!cycle.isRewinding())
056            {
057                writer.begin(getTemplateTagName()); // use element specified
058                renderIdAttribute(writer, cycle); // render id="" client id
059                renderInformalParameters(writer, cycle);
060            }
061            
062            renderBody(writer, cycle);
063            
064            if (!cycle.isRewinding())
065                writer.end();
066            
067            if (!cycle.isRewinding())
068            {
069                JSONObject json = new JSONObject();
070                json.put("bgColor", getBackgroundColor());
071                json.put("bgOpacity", getOpacity());
072    
073                Map parms = new HashMap();
074                parms.put("component", this);
075                parms.put("props", json.toString());
076                
077                getScript().execute(this, cycle, TapestryUtils.getPageRenderSupport(cycle, this), parms);
078            }
079        }
080        
081        /** injected. */
082        public abstract IScript getScript();
083    }