| /* |
| * 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; |
| |
| import com.intellij.designer.designSurface.feedbacks.LineInsertFeedback; |
| import com.intellij.designer.designSurface.feedbacks.RectangleFeedback; |
| import com.intellij.designer.model.RadComponent; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.awt.*; |
| import java.util.List; |
| |
| /** |
| * @author Alexander Lobas |
| */ |
| public abstract class AbstractFlowBaseOperation extends AbstractEditOperation { |
| protected final boolean myHorizontal; |
| protected RectangleFeedback myFirstInsertFeedback; |
| protected LineInsertFeedback myInsertFeedback; |
| protected Rectangle myBounds; |
| protected RadComponent myChildTarget; |
| protected boolean myInsertBefore; |
| |
| public AbstractFlowBaseOperation(RadComponent container, OperationContext context, boolean horizontal) { |
| super(container, context); |
| myHorizontal = horizontal; |
| } |
| |
| protected void createFeedback() { |
| if (myFirstInsertFeedback == null) { |
| FeedbackLayer layer = myContext.getArea().getFeedbackLayer(); |
| myBounds = myContainer.getBounds(layer); |
| |
| createFirstInsertFeedback(); |
| createInsertFeedback(); |
| |
| if (getChildren().isEmpty()) { |
| layer.add(myFirstInsertFeedback); |
| } |
| else { |
| layer.add(myInsertFeedback); |
| } |
| layer.repaint(); |
| } |
| } |
| |
| protected List<RadComponent> getChildren() { |
| return myContainer.getChildren(); |
| } |
| |
| protected abstract void createInsertFeedback(); |
| |
| protected abstract void createFirstInsertFeedback(); |
| |
| @Override |
| public void showFeedback() { |
| createFeedback(); |
| |
| List<RadComponent> children = getChildren(); |
| if (!children.isEmpty()) { |
| FeedbackLayer layer = myContext.getArea().getFeedbackLayer(); |
| Point location = myContext.getLocation(); |
| myChildTarget = null; |
| |
| if (myHorizontal) { |
| handleHorizontal(children, layer, location); |
| } |
| else { |
| handleVertical(children, layer, location); |
| } |
| if (myChildTarget == null) { |
| myChildTarget = getSideChildTarget(); |
| } |
| |
| Rectangle targetBounds = getBounds(myChildTarget, layer); |
| myInsertBefore = myHorizontal ? location.x < targetBounds.getCenterX() : location.y < targetBounds.getCenterY(); |
| setInsertFeedbackBounds(targetBounds); |
| |
| layer.repaint(); |
| } |
| } |
| |
| protected void handleHorizontal(List<RadComponent> children, FeedbackLayer layer, Point location) { |
| for (RadComponent child : children) { |
| Rectangle childBounds = getBounds(child, layer); |
| if (childBounds.x <= location.x && location.x <= childBounds.getMaxX()) { |
| myChildTarget = child; |
| break; |
| } |
| } |
| } |
| |
| protected void handleVertical(List<RadComponent> children, FeedbackLayer layer, Point location) { |
| for (RadComponent child : children) { |
| Rectangle childBounds = getBounds(child, layer); |
| if (childBounds.y <= location.y && location.y <= childBounds.getMaxY()) { |
| myChildTarget = child; |
| break; |
| } |
| } |
| } |
| |
| protected void setInsertFeedbackBounds(Rectangle targetBounds) { |
| if (myHorizontal) { |
| if (myInsertBefore) { |
| myInsertFeedback.setLocation(targetBounds.x, myBounds.y); |
| } |
| else { |
| myInsertFeedback.setLocation(targetBounds.x + targetBounds.width, myBounds.y); |
| } |
| } |
| else { |
| if (myInsertBefore) { |
| myInsertFeedback.setLocation(myBounds.x, targetBounds.y); |
| } |
| else { |
| myInsertFeedback.setLocation(myBounds.x, targetBounds.y + targetBounds.height); |
| } |
| } |
| } |
| |
| protected Rectangle getBounds(RadComponent component, FeedbackLayer layer) { |
| return component.getBounds(layer); |
| } |
| |
| private RadComponent getSideChildTarget() { |
| Point location = myContext.getLocation(); |
| List<RadComponent> children = getChildren(); |
| RadComponent lastChild = children.get(children.size() - 1); |
| Rectangle childBounds = lastChild.getBounds(myContext.getArea().getFeedbackLayer()); |
| |
| if (myHorizontal) { |
| if (location.x >= childBounds.getMaxX()) { |
| return lastChild; |
| } |
| return children.get(0); |
| } |
| if (location.y >= childBounds.getMaxY()) { |
| return lastChild; |
| } |
| return children.get(0); |
| } |
| |
| @Override |
| public void eraseFeedback() { |
| if (myFirstInsertFeedback != null) { |
| FeedbackLayer layer = myContext.getArea().getFeedbackLayer(); |
| layer.remove(myFirstInsertFeedback); |
| layer.remove(myInsertFeedback); |
| layer.repaint(); |
| myFirstInsertFeedback = null; |
| myInsertFeedback = null; |
| } |
| } |
| |
| @Override |
| public boolean canExecute() { |
| if (myContext.isMove()) { |
| if (myComponents.contains(myChildTarget)) { |
| return false; |
| } |
| |
| List<RadComponent> children = getChildren(); |
| int index = children.indexOf(myChildTarget) + (myInsertBefore ? -1 : 1); |
| if (0 <= index && index < children.size()) { |
| return !myComponents.contains(children.get(index)); |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public void execute() throws Exception { |
| if (myChildTarget == null || myInsertBefore) { |
| execute(myChildTarget); |
| } |
| else { |
| List<RadComponent> children = getChildren(); |
| int index = children.indexOf(myChildTarget) + 1; |
| if (index < children.size()) { |
| execute(children.get(index)); |
| } |
| else { |
| execute(null); |
| } |
| } |
| } |
| |
| protected abstract void execute(@Nullable RadComponent insertBefore) throws Exception; |
| } |