/*FreeMind - A Program for creating and viewing Mindmaps
*Copyright (C) 2000-2006 Joerg Mueller, Daniel Polansky, Christian Foltin, Dimitri Polivaev and others.
*
*See COPYING for Details
*
*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 2
*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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Created on 28.03.2004
*
*/
package accessories.plugins;
import java.awt.event.InputEvent;
import java.awt.event.MouseWheelEvent;
import java.util.Iterator;
import freemind.extensions.HookRegistration;
import freemind.main.Tools;
import freemind.modes.MindMap;
import freemind.modes.MindMapNode;
import freemind.modes.ModeController;
import freemind.modes.mindmapmode.MindMapController;
import freemind.modes.mindmapmode.actions.MindMapActions.MouseWheelEventHandler;
import freemind.modes.mindmapmode.hooks.MindMapNodeHookAdapter;
/**
* @author foltin
*
*/
public class UnfoldAll extends MindMapNodeHookAdapter {
public static class Registration implements HookRegistration,
MouseWheelEventHandler {
private final MindMapController controller;
private final MindMap mMap;
private final java.util.logging.Logger logger;
private UnfoldAll hookInstance;
public Registration(ModeController controller, MindMap map) {
this.controller = (MindMapController) controller;
mMap = map;
logger = controller.getFrame().getLogger(this.getClass().getName());
// fc, 12.8.2004: this is a bad hack, but when time lacks...
hookInstance = new UnfoldAll();
hookInstance.setController(controller);
hookInstance.setMap(mMap);
}
public void register() {
controller.registerMouseWheelEventHandler(this);
}
public void deRegister() {
controller.deRegisterMouseWheelEventHandler(this);
}
public boolean handleMouseWheelEvent(MouseWheelEvent e) {
if ((e.getModifiers() & InputEvent.ALT_MASK) != 0) {
logger.info("handleMouseWheelEvent entered.");
MindMapNode rootNode = mMap.getRootNode();
if (e.getWheelRotation() > 0) {
hookInstance.unfoldOneStage(rootNode);
} else {
// this is to avoid having selected nodes getting folded.
controller.select(controller.getView().getRoot());
hookInstance.foldOneStage(rootNode);
}
return true;
}
return false;
}
}
/**
*
*/
public UnfoldAll() {
super();
}
public void invoke(MindMapNode node) {
super.invoke(node);
boolean foldState = Tools
.xmlToBoolean(getResourceString("foldingState"));
String foldingType = getResourceString("foldingType");
String applyTo = getResourceString("applyTo");
if ("root".equals(applyTo)) {
node = getMindMapController().getRootNode();
}
if (foldingType.equals("All")) {
if (foldState) {
foldAll(node);
} else {
unfoldAll(node);
}
} else {
if (foldState) {
foldOneStage(node);
} else {
unfoldOneStage(node);
}
}
}
/**
*/
protected void unfoldOneStage(MindMapNode node) {
int minDepth = getMinDepth(node);
if (minDepth < Integer.MAX_VALUE)
minDepth++;
unfoldStageN(node, minDepth);
}
/**
*/
protected void foldOneStage(MindMapNode node) {
foldStageN(node, getMaxDepth(node) - 1);
}
/**
*/
protected void foldAll(MindMapNode node) {
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
foldAll((MindMapNode) i.next());
}
setFolded(node, true);
}
public void unfoldAll(MindMapNode node) {
setFolded(node, false);
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
unfoldAll((MindMapNode) i.next());
}
}
/**
* Unfolds every node that has only children which themselves have children.
* As this function is a bit difficult to describe and perhaps not so
* useful, it is currently not introduced into the menus.
*
* @param node
* node to start from.
*/
public void foldLastBranches(MindMapNode node) {
boolean nodeHasChildWhichIsLeave = false;
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
MindMapNode child = (MindMapNode) i.next();
if (child.getChildCount() == 0) {
nodeHasChildWhichIsLeave = true;
}
}
setFolded(node, nodeHasChildWhichIsLeave);
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
foldLastBranches((MindMapNode) i.next());
}
}
protected void setFolded(MindMapNode node, boolean state) {
if (node.hasChildren() && (node.isFolded() != state)) {
getMindMapController().setFolded(node, state);
}
}
public void unfoldStageN(MindMapNode node, int stage) {
int k = depth(node);
if (k < stage) {
setFolded(node, false);
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
unfoldStageN((MindMapNode) i.next(), stage);
}
} else {
foldAll(node);
}
}
public void foldStageN(MindMapNode node, int stage) {
int k = depth(node);
if (k < stage) {
setFolded(node, false);
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
foldStageN((MindMapNode) i.next(), stage);
}
} else {
foldAll(node);
}
}
public int getMinDepth(MindMapNode node) {
if (node.isFolded())
return depth(node);
if (!node.hasChildren())
return Integer.MAX_VALUE;
int k = Integer.MAX_VALUE;
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
int l = getMinDepth((MindMapNode) i.next());
if (l < k)
k = l;
}
return k;
}
/**
*/
protected int getMaxDepth(MindMapNode node) {
if (node.isFolded() || !node.hasChildren())
return depth(node);
int k = 0;
for (Iterator i = node.childrenUnfolded(); i.hasNext();) {
int l = getMaxDepth((MindMapNode) i.next());
if (l > k)
k = l;
}
return k;
}
protected int depth(MindMapNode node) {
if (node.isRoot())
return 0;
return depth((MindMapNode) node.getParent()) + 1;
}
}