基于eclipse GEF开发Google GWT矢量图形应用(eclipse gef on gwt)
下面这个整合案例来自http://code.google.com/p/gwt-html5-graph/
实际的运行案例：
Demo1(GEF Sample): http://euml.trufun.net/drawx/gef-sample/Gef_sample.html
源码：
1、在gwt.xml中加入对GEF的依赖：
<inherits name='GEF' />
2、按照GEF API，开发相应的editparts, figures, commands, editpolicies,actions,context menus,以及图形数据的序列化
3、整合GEF和GWT。
3.1)继承drawx提供的DiagramEditorWithPalette，如下：
import org.drawx.gef.sample.client.tool.example.model.CanvasModel;
import org.drawx.gef.sample.client.tool.example.model.MyConnectionModel;
import org.drawx.gef.sample.client.tool.example.model.OrangeModel;
import org.drawx.gef.ui.editor.DiagramEditorWithPalette;
import org.drawx.gef.ui.editor.ToolPalette;
import org.eclipse.gef.EditPartFactory;
import org.eclipse.gef.requests.CreationFactory;
import org.eclipse.swt.widgets.internal.menu.MenuManager;
import com.google.gwt.user.client.ui.Image;
public class MyDiagramEditor extends DiagramEditorWithPalette{
public MyDiagramEditor(boolean b) {
super(b);
}
@Override
public EditPartFactory getEditPartFactory() {
return new org.drawx.gef.sample.client.tool.example.editparts.MyEditPartFactory();
}
@Override
public Object getContents() {
return new CanvasModel();
}
@Override
public void initPalette(ToolPalette palette) {
palette.addCreationTool("Create Node", new Image(Images.INSTANCE.newModel().getURL()), new CreationFactory() {
public Object getNewObject() {
return new OrangeModel();
}
public Object getObjectType() {
return OrangeModel.class;
}
});
palette.addConnectionTool("Create Connection", new Image(Images.INSTANCE.newConnection().getURL()), new CreationFactory() {
public Object getNewObject() {
return new MyConnectionModel();
}
public Object getObjectType() {
return MyConnectionModel.class;
}
});
}
@Override
protected void doSave() {
}
@Override
protected void createAppActions() {
}
@Override
protected MenuManager getContextMenu() {
return new MyContextMenuProvider(this.getGraphicalViewer(), this
.getActionRegistry());
}
}
3.2）将diagram editor加入到WEB页面上
private void createTab1(TabLayoutPanel p) {
DiagramEditorWithPalette editor = new MyDiagramEditor(true);
p.add(editor.getWidget(), "Fill Canvas");
}
