| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * 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.intellij.designer.designSurface.tools; |
| |
| import com.intellij.designer.designSurface.ComponentTargetFilter; |
| import com.intellij.designer.designSurface.EditOperation; |
| import com.intellij.designer.designSurface.EditableArea; |
| import com.intellij.designer.designSurface.OperationContext; |
| import com.intellij.designer.model.RadComponent; |
| import com.intellij.designer.model.RadLayout; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.awt.event.KeyEvent; |
| import java.util.Collections; |
| |
| /** |
| * @author Alexander Lobas |
| */ |
| public abstract class TargetingTool extends InputTool { |
| protected OperationContext myContext = new OperationContext(); |
| protected EditOperation myTargetOperation; |
| protected RadComponent myTarget; |
| private boolean myShowFeedback; |
| |
| @Override |
| public void deactivate() { |
| eraseFeedback(); |
| myContext = new OperationContext(); |
| myTargetOperation = null; |
| myTarget = null; |
| super.deactivate(); |
| } |
| |
| protected void handleInvalidInput() { |
| eraseFeedback(); |
| setExecuteEnabled(false); |
| } |
| |
| @Override |
| protected void handleDragStarted() { |
| if (myState == STATE_DRAG) { |
| myState = STATE_DRAG_IN_PROGRESS; |
| } |
| } |
| |
| @Override |
| protected void handleAreaExited() { |
| setTarget(null, null); |
| setExecuteEnabled(false); |
| } |
| |
| protected void showFeedback() { |
| if (myTargetOperation != null) { |
| myTargetOperation.showFeedback(); |
| } |
| myShowFeedback = true; |
| } |
| |
| protected void eraseFeedback() { |
| if (myShowFeedback) { |
| myShowFeedback = false; |
| if (myTargetOperation != null) { |
| myTargetOperation.eraseFeedback(); |
| } |
| } |
| } |
| |
| protected void executeCommand() { |
| if (myExecuteEnabled) { |
| myToolProvider.execute(Collections.singletonList(myTargetOperation), myContext.getMessage()); |
| } |
| } |
| |
| protected void updateCommand() { |
| setExecuteEnabled(myTargetOperation != null && myTargetOperation.canExecute()); |
| } |
| |
| protected void updateContext() { |
| myContext.setArea(myArea); |
| myContext.setInputEvent(myInputEvent); |
| myContext.setModifiers(myInputEvent.getModifiers()); |
| } |
| |
| protected void setTarget(@Nullable RadComponent target, @Nullable ContainerTargetFilter filter) { |
| if (target != myTarget) { |
| if (myTargetOperation != null) { |
| eraseFeedback(); |
| } |
| |
| myTarget = target; |
| myTargetOperation = filter == null ? null : filter.getOperation(); |
| } |
| } |
| |
| @Override |
| public void keyPressed(KeyEvent event, EditableArea area) throws Exception { |
| boolean changedModifiers = event.getModifiers() != myModifiers; |
| super.keyPressed(event, area); |
| |
| if (changedModifiers) { |
| handleKeyEvent(); |
| } |
| } |
| |
| @Override |
| public void keyReleased(KeyEvent event, EditableArea area) throws Exception { |
| boolean changedModifiers = event.getModifiers() != myModifiers; |
| super.keyReleased(event, area); |
| |
| if (changedModifiers) { |
| handleKeyEvent(); |
| } |
| } |
| |
| protected void handleKeyEvent() { |
| if (myContext != null) { |
| updateContext(); |
| showFeedback(); |
| updateCommand(); |
| } |
| } |
| |
| protected class ContainerTargetFilter implements ComponentTargetFilter { |
| private EditOperation myOperation; |
| |
| public EditOperation getOperation() { |
| return myOperation; |
| } |
| |
| @Override |
| public boolean preFilter(RadComponent component) { |
| return true; |
| } |
| |
| @Override |
| public boolean resultFilter(RadComponent target) { |
| updateContext(target); |
| |
| if (myTarget == target && myOperation != null) { |
| return true; |
| } |
| |
| RadLayout layout = target.getLayout(); |
| if (layout != null) { |
| myContext.setContainer(target); |
| myOperation = layout.processChildOperation(myContext); |
| myContext.setContainer(null); |
| } |
| |
| return myOperation != null; |
| } |
| |
| protected void updateContext(RadComponent target) { |
| } |
| } |
| } |