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git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268420 13f79535-47bb-0310-9956-ffa450edef68
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metasim 24 years ago
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      src/antidote/org/apache/tools/ant/gui/core/ProjectProxy.java

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/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999, 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.tools.ant.gui.core;

import org.apache.tools.ant.*;
import org.apache.tools.ant.gui.*;
import org.apache.tools.ant.gui.event.*;
import org.apache.tools.ant.gui.acs.ElementTreeSelectionModel;
import org.apache.tools.ant.gui.acs.*;
import java.io.File;
import java.io.Writer;
import java.io.IOException;
import javax.swing.tree.TreeModel;
import javax.swing.text.Document;
import javax.swing.tree.TreeSelectionModel;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import java.util.*;
import org.xml.sax.SAXException;

/**
* This class provides the gateway interface to the data model for
* the application. The translation between the Ant datamodel,
* (or other external datamodel) occurs. This class also provides various
* views into the data model, such as TreeModel, Documenet, etc.
*
* @version $Revision$
* @author Simeon Fitch
*/
public class ProjectProxy {

/** Application context */
private AppContext _context = null;
/** The file where the project was last saved. */
private File _file = null;
/** The real Ant Project instance. */
private ACSProjectElement _project = null;
/** The current thread executing a build. */
private Thread _buildThread = null;
/** The selection model for selected targets. */
private ElementTreeSelectionModel _selections = null;

/**
* File loading ctor.
*
* @param file File containing build file to load.
*/
public ProjectProxy(AppContext context, File file)
throws IOException, SAXException {
_file = file;
_context = context;
loadProject();
}

/**
* Load the project from the build file.
*
*/
private void loadProject() throws IOException, SAXException {
_project = ACSFactory.getInstance().load(_file);
_selections = new ElementTreeSelectionModel();
_selections.addTreeSelectionListener(new SelectionForwarder());
}

/**
* Write the project in XML format to the given output.
*
* @param out Output to write to.
*/
public void write(Writer out) throws IOException {
if(_project == null) return;

_project.write(out);
}

/**
* Build the project with the current target (or the default target
* if none is selected. Build occurs on a separate thread, so method
* returns immediately.
*
*/
public void build() throws BuildException {
Project project = new Project();
project.init();
// XXX there is a bunch of stuff in the class
// org.apache.tools.ant.Main that needs to be
// refactored out so that it doesn't have to be
// replicated here.
// XXX need to provide a way to pass in externally
// defined properties. Perhaps define an external
// Antidote properties file. JAVA_HOME may have to be set,
// as well as checking the .ant.properties
project.setUserProperty("ant.file" , _file.getAbsolutePath());
ProjectHelper.configureProject(project, _file);


_buildThread = new Thread(new BuildRunner(project));
_buildThread.start();
}

/**
* Get the file where the project is saved to. If the project
* is a new one that has never been saved the this will return null.
*
* @return Project file, or null if not save yet.
*/
public File getFile() {
return _file;
}

/**
* Set the file that this is to be saved to.
*
* @param file File to save to.
*/
public void setFile(File file) {
_file = file;
}


/**
* Get the TreeModel perspective on the data.
*
* @return TreeModel view on project.
*/
public TreeModel getTreeModel() {
if(_project != null) {
return new ElementTreeModel(_project);
}
return null;
}

/**
* Get the tree selection model for selected targets.
*
* @return Selection model.
*/
public ElementTreeSelectionModel getTreeSelectionModel() {
return _selections;
}


/** Class for executing the build in a separate thread. */
private class BuildRunner implements Runnable {
/** The project to execute build on. */
private Project _project = null;

/**
* Standard ctor.
*
* @param project Project to execute build on.
*/
public BuildRunner(Project project) {
_project = project;
}

/**
* Convenience method for causeing the project to fire a build event.
* Implemented because the corresponding method in the Project class
* is not publically accessible.
*
* @param event Event to fire.
*/
private void fireBuildEvent(BuildEvent event, BuildEventType type) {
Enumeration enum = _project.getBuildListeners().elements();
while(enum.hasMoreElements()) {
BuildListener l = (BuildListener) enum.nextElement();
type.fireEvent(event, l);
}
}

/**
* Run the build.
*
*/
public void run() {
// Add the build listeners
BuildListener[] listeners = _context.getBuildListeners();
for(int i = 0; i < listeners.length; i++) {
_project.addBuildListener(listeners[i]);
}

try {

fireBuildEvent(new BuildEvent(
_project), BuildEventType.BUILD_STARTED);
// Generate list of targets to execute.
ACSTargetElement[] targets = _selections.getSelectedTargets();
Vector targetNames = new Vector();
if(targets.length == 0) {
targetNames.add(_project.getDefaultTarget());
}
else {
for(int i = 0; i < targets.length; i++) {
targetNames.add(targets[i].getName());
}
}
// Execute build on selected targets. XXX It would be
// nice if the Project API supported passing in target
// objects rather than String names.
_project.executeTargets(targetNames);
}
catch(BuildException ex) {
BuildEvent errorEvent = new BuildEvent(_project);
errorEvent.setException(ex);
errorEvent.setMessage(ex.getMessage(), Project.MSG_ERR);
fireBuildEvent(errorEvent, BuildEventType.MESSAGE_LOGGED);
}
finally {
fireBuildEvent(new BuildEvent(
_project), BuildEventType.BUILD_FINISHED);

// Remove the build listeners.
for(int i = 0; i < listeners.length; i++) {
_project.removeBuildListener(listeners[i]);
}
}
}
}

/** Forwards selection events to the event bus. */
private class SelectionForwarder implements TreeSelectionListener {
public void valueChanged(TreeSelectionEvent e) {
_context.getEventBus().postEvent(ElementSelectionEvent.createEvent(
_context, _selections.getSelectedElements()));
}
}

}

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