Bug 136807 [Regression]Preview embedded image with web view will effect other way to preview
Details: [Regression]Preview embedded image with web view will effect other way to preview Step: 1.New a library and insert a embedded image. 2.New a report design and use the library. 3.Drop the image form library into layout. 4.Preview with HTML/PDF. 5.Preview with web view. 6.Preview with HTML/PDF. Actual result: In step 4, image is previewed. In step 5, image can't be previewed. In step 6, image can't be previewed. It means that, after I use web view to preview the embedded image from library, I can't preview this image any ways.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/content/impl/ImageContent.java
protected String uri;
	protected int sourceType = -1;
	transient protected byte[] data;
	/**
	 * The image map object (if any). Null means there's no image map. For HTML
	 * format, the image map is the HTML client-side image map string. It can be
	 * embedded into the HTML code directly.
	 */
	protected Object imageMap;
	protected String MIMEType;
	public int getContentType( )
	{
		return IMAGE_CONTENT;
	}
	public ImageContent( ReportContent report )
	{
		super( report );
	}
	public ImageContent( IContent content )
	{
		super( content );
	}
	public void accept( IContentVisitor visitor, Object value )
	{
		visitor.visitImage( this, value );
	}
	public String getAltText( )
	{
		if ( altText == null )
		{