com.viaoa.jfc.editor.html.control.Class2ImageHandler Maven / Gradle / Ivy

Go to download
/*  Copyright 1999-2015 Vince Via [email protected]
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
    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.
*/
package com.viaoa.jfc.editor.html.control;

import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.imageio.ImageIO;

import com.viaoa.hub.Hub;
import com.viaoa.jfc.editor.html.OAHTMLTextPane;
import com.viaoa.jfc.editor.html.protocol.oaproperty.Handler;
import com.viaoa.jfc.image.OAImageUtil;
import com.viaoa.object.OAObject;
import com.viaoa.object.OAObjectReflectDelegate;
import com.viaoa.util.OAConv;


/**
 * Used by OAHTMLTextPane to use OAObjects to store images in an OAObject.
 * 
 * This will use an Image src protocol/scheme of "oaproperty://className.../prop?id"
 * and will also work when setting the HTML src attribute to the value of the object Id
 * or by finding the src in the objects sourceName. 
 * 
 * Note: this is not needed for readonly/reports, only for Editors; since the "oaproperty://" url Handler
 * will be able to find the image in the object property.
 * 
 */
public class Class2ImageHandler implements ImageHandlerInterface {
    private static Logger LOG = Logger.getLogger(Class2ImageHandler.class.getName());
    
    
    private OAHTMLTextPane txtHtml;
    private Hub hub;
    private String byteArrayPropertyName;
    private String sourceNamePropertyName;
    private String idPropertyName;    
    
    
    static {
        // make sure that the "oaproperty://" url handler is installed.
        //   it is used to automatically load URL images from OAObject property.
        com.viaoa.jfc.editor.html.protocol.classpath.Handler.register();
    }
    
    /**
     * 

     * @param byteArrayPropertyName name of property that is for a byte[] to store "raw"
     * @param sourceNamePropertyName property to use to store the source of the image (ex: file name) 
     * @param idPropertyName unique property value to use for the html img src tag. If null, then sourceNamePropertyName will be used.
     */
    public Class2ImageHandler(OAHTMLTextPane txtHtml, Class clazz, String byteArrayPropertyName, String sourceNamePropertyName, String idPropertyName) {
        this.txtHtml = txtHtml;
        this.hub = new Hub(clazz);
        this.byteArrayPropertyName = byteArrayPropertyName;
        this.sourceNamePropertyName = sourceNamePropertyName;
        this.idPropertyName = idPropertyName;
        
        txtHtml.setImageHandler(this);
    }


    /**
     * Finds the object that is storing the image, using the html image src attribute.
     * This will take 3 approaches to find the object:
     * 1: if using oaproperty:// scheme, it will use the value after "?" as the object id.
     * 2: it will use the src as the object Id.
     * 3: if will find object based on the sourceName property in the object.
     * @param srcName URL of image.
     * @return object that is storing the image
     * @see com.viaoa.jfc.editor.html.protocol.oaproperty.Handler used by HTMLTextPane to directly get image from OAObject property
     */
    protected OAObject getObject(String srcName) {
        // url ex: "oaproperty://com.vetplan.oa.ImageStore/bytes?12.abc"
        OAObject obj = null;
        if (srcName == null) return obj;
        int pos = srcName.indexOf('?');
        if (pos < 0) return null;

        String id = null;
        
        // 20130217 get Id from oaprperty scheme
        id = srcName.substring(pos+1);    
        
        /* was
        String query = srcName;
        String[] params = query.split("&");

        for (int i=0; i
        
            
                Related Artifacts
                
                                    
            
        
        
            
                Related Groups
                
                                    
            
        
    
    
-->