/*
* Copyright 2012 JBoss Inc
*
* 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 org.drools.guvnor.client.widgets.drools.decoratedgrid;
import java.util.SortedSet;
import java.util.TreeSet;
import org.drools.guvnor.client.decisiontable.widget.events.InsertInternalDecisionTableColumnEvent;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.CopyRowsEvent;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.DeleteColumnEvent;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.InsertInternalColumnEvent;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.MoveColumnsEvent;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.PasteRowsEvent;
import org.drools.guvnor.client.widgets.drools.decoratedgrid.events.RowGroupingChangeEvent;
import org.drools.ide.common.client.modeldriven.dt52.BaseColumn;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.shared.EventBus;
/**
* A context menu for the copying\pasting rows
*/
public class CopyPasteContextMenu extends AbstractContextMenu
implements
DeleteColumnEvent.Handler,
InsertInternalDecisionTableColumnEvent.Handler<BaseColumn>,
MoveColumnsEvent.Handler,
RowGroupingChangeEvent.Handler {
private SortedSet<Integer> context = new TreeSet<Integer>();
private final ContextMenuItem itemCopy;
private final ContextMenuItem itemPaste;
private final EventBus eventBus;
public CopyPasteContextMenu(final EventBus eventBus) {
this.eventBus = eventBus;
itemCopy = new ContextMenuItem( Constants.INSTANCE.Copy(),
true,
new ClickHandler() {
public void onClick(ClickEvent event) {
itemPaste.setEnabled( true );
CopyRowsEvent cpre = new CopyRowsEvent( context );
eventBus.fireEvent( cpre );
hide();
}
} );
addContextMenuItem( itemCopy );
itemPaste = new ContextMenuItem( Constants.INSTANCE.Paste(),
false,
new ClickHandler() {
public void onClick(ClickEvent event) {
int targetRowIndex = context.first();
PasteRowsEvent pre = new PasteRowsEvent( targetRowIndex );
eventBus.fireEvent( pre );
hide();
}
} );
addContextMenuItem( itemPaste );
//Wire-up event handlers
eventBus.addHandler( DeleteColumnEvent.TYPE,
this );
eventBus.addHandler( InsertInternalDecisionTableColumnEvent.TYPE,
this );
eventBus.addHandler( MoveColumnsEvent.TYPE,
this );
eventBus.addHandler( RowGroupingChangeEvent.TYPE,
this );
}
public void setContextRows(SortedSet<Integer> context) {
this.context = context;
}
//If a column is inserted invalidate "Paste" as the current "copied" row's content is invalid
public void onInsertInternalColumn(InsertInternalColumnEvent<BaseColumn> event) {
reset();
}
//If a column is deleted invalidate "Paste" as the current "copied" row's content is invalid
public void onDeleteColumn(DeleteColumnEvent event) {
reset();
}
//If a column is moved invalidate "Paste" as the current "copied" row's content is invalid
public void onMoveColumns(MoveColumnsEvent event) {
reset();
}
//If row's grouping is changed invalidate "Paste" as the copied rows will be inconsistent with the current state of the table
public void onRowGroupingChange(RowGroupingChangeEvent event) {
reset();
}
private void reset() {
context.clear();
itemPaste.setEnabled( false );
CopyRowsEvent cpre = new CopyRowsEvent();
eventBus.fireEvent( cpre );
}
}