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/*
GanttProject is an opensource project management tool. License: GPL3
Copyright (C) 2010 Dmitry Barashev
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package net.sourceforge.ganttproject.chart.mouse;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.MouseEvent;
import net.sourceforge.ganttproject.chart.DependencyInteractionRenderer;
import net.sourceforge.ganttproject.chart.item.TaskRegularAreaChartItem;
import net.sourceforge.ganttproject.gui.UIFacade;
import net.sourceforge.ganttproject.task.Task;
import net.sourceforge.ganttproject.task.dependency.TaskDependency;
import net.sourceforge.ganttproject.task.dependency.TaskDependencyCollection;
import net.sourceforge.ganttproject.task.dependency.TaskDependencyException;
import net.sourceforge.ganttproject.task.dependency.constraint.FinishStartConstraintImpl;
public class DrawDependencyInteraction extends MouseInteractionBase implements
MouseInteraction {
private final Task myTask;
private Point myStartPoint;
private DependencyInteractionRenderer myArrow;
private Task myDependant;
private MouseEvent myLastMouseEvent = null;
private final UIFacade myUiFacade;
private final TaskDependencyCollection myDependencyCollection;
private final ChartModelFacade myChartModelFacade;
public static interface ChartModelFacade {
Task findTaskUnderMousePointer(int xpos, int ypos);
TaskDependency.Hardness getDefaultHardness();
}
public DrawDependencyInteraction(MouseEvent initiatingEvent,
TaskRegularAreaChartItem taskArea, TimelineFacade timelineFacade, ChartModelFacade chartModelFacade,
UIFacade uiFacade, TaskDependencyCollection dependencyCollection) {
super(null, timelineFacade);
myUiFacade = uiFacade;
myChartModelFacade = chartModelFacade;
myDependencyCollection = dependencyCollection;
myStartPoint = initiatingEvent.getPoint();
myTask = taskArea.getTask();
myArrow = new DependencyInteractionRenderer(
myStartPoint.x, myStartPoint.y, myStartPoint.x, myStartPoint.y);
}
@Override
public void apply(MouseEvent event) {
myArrow.changePoint2(event.getX(), event.getY());
myLastMouseEvent = event;
}
@Override
public void finish() {
if (myLastMouseEvent != null) {
myDependant = myChartModelFacade.findTaskUnderMousePointer(
myLastMouseEvent.getX(), myLastMouseEvent.getY());
final Task dependee = myTask;
if (myDependant != null) {
if (myDependencyCollection.canCreateDependency(myDependant, dependee)) {
myUiFacade.getUndoManager().undoableEdit("Draw dependency",
new Runnable() {
@Override
public void run() {
try {
TaskDependency dep = myDependencyCollection.createDependency(
myDependant, dependee, new FinishStartConstraintImpl());
dep.setHardness(myChartModelFacade.getDefaultHardness());
} catch (TaskDependencyException e) {
myUiFacade.showErrorDialog(e);
}
}
});
}
} else {
myArrow = new DependencyInteractionRenderer();
myUiFacade.getActiveChart().reset();
}
}
}
@Override
public void paint(Graphics g) {
myArrow.paint(g);
}
}
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