rdt/org.eclipse.ptp.rdt.sync.ui/src/org/eclipse/ptp/rdt/sync/ui/properties/RemoteEnvironmentTab.java - ptp/org.eclipse.ptp - Git at Google

 /*******************************************************************************
  * Copyright (c) 2009, 2010 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM - Initial API and implementation
  *******************************************************************************/
 package org.eclipse.ptp.rdt.sync.ui.properties;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.Map;

 import org.eclipse.cdt.core.envvar.IEnvironmentVariable;
 import org.eclipse.cdt.core.model.util.CDTListComparator;
 import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
 import org.eclipse.cdt.core.settings.model.ICResourceDescription;
 import org.eclipse.cdt.internal.core.envvar.EnvVarDescriptor;
 import org.eclipse.cdt.internal.core.envvar.EnvironmentVariableManager;
 import org.eclipse.cdt.internal.core.envvar.UserDefinedEnvironmentSupplier;
 import org.eclipse.cdt.ui.newui.AbstractCPropertyTab;
 import org.eclipse.cdt.ui.newui.CDTPrefUtil;
 import org.eclipse.cdt.ui.newui.EnvDialog;
 import org.eclipse.cdt.ui.newui.MultiCfgContributedEnvironment;
 import org.eclipse.cdt.ui.newui.PrefPage_Abstract;
 import org.eclipse.cdt.ui.newui.UIMessages;
 import org.eclipse.cdt.utils.envvar.StorableEnvironment;
 import org.eclipse.cdt.utils.spawner.EnvironmentReader;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.viewers.IColorProvider;
 import org.eclipse.jface.viewers.IFontProvider;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.ITableFontProvider;
 import org.eclipse.jface.viewers.ITableLabelProvider;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.window.Window;
 import org.eclipse.osgi.util.TextProcessor;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.ui.dialogs.ListSelectionDialog;

 /**
  * @author crecoskie, peterwan
  *
  */
 public class RemoteEnvironmentTab extends AbstractCPropertyTab {

 	private static final String SEMI = ";"; //$NON-NLS-1$
 	private static final String LBR = " ["; //$NON-NLS-1$
 	private static final String RBR = "]"; //$NON-NLS-1$
 	private static final UserDefinedEnvironmentSupplier fUserSupplier = EnvironmentVariableManager.fUserSupplier;

 	private final MultiCfgContributedEnvironment ce = new MultiCfgContributedEnvironment();

 	private Table table;
 	private TableViewer tv;
 	private ArrayList<TabData> data = new ArrayList<TabData>();
 	private Label  lb1, lb2;

 	private ICConfigurationDescription cfgd = null;
 	private StorableEnvironment vars = null;

 	private class TabData implements Comparable<TabData> {
 		IEnvironmentVariable var;
 		boolean changed;
 		TabData(IEnvironmentVariable _var, boolean _changed) {
 			var = _var;
 			changed = _changed;
 		}
 		public int compareTo(TabData a) {
 			String s = var.getName();
 			if (a != null && s != null && a.var != null)
 					return (s.compareTo(a.var.getName()));
 			return 0;
 		}
 	}

 	private class EnvironmentLabelProvider extends LabelProvider implements ITableLabelProvider, IFontProvider , ITableFontProvider, IColorProvider{
 		public EnvironmentLabelProvider(boolean user){
 		}
 		@Override
 		public Image getImage(Object element) {
 			return null; // JavaPluginImages.get(JavaPluginImages.IMG_OBJS_REFACTORING_INFO);
 		}
 		@Override
 		public String getText(Object element) {
 			return getColumnText(element, 0);
 		}
 		public Image getColumnImage(Object element, int columnIndex) {
 			return null;
 		}
 		public String getColumnText(Object element, int columnIndex) {
 			TabData td = (TabData)element;
 			switch(columnIndex){
 			case 0:
 				return td.var.getName();
 			case 1:
 				if(td.var.getOperation() == IEnvironmentVariable.ENVVAR_REMOVE)
 					return UIMessages.getString(UIMessages.getString("EnvironmentTab.20")); //$NON-NLS-1$
 				return td.var.getValue();
 			case 2:
 				return ce.getOrigin(td.var);
 			}
 			return EMPTY_STR;
 		}

 		public Font getFont(Object element) {
 			return getFont(element, 0);
 		}

 		public Font getFont(Object element, int columnIndex) {
 			TabData td = (TabData)element;
 			switch(columnIndex){
 			case 0:
 				if (isUsers(td.var))
 					return JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT);
 				break;
 			default:
 				break;
 			}
 			return null;
 		}

 	    public Color getForeground(Object element){
 			return null;
 	    }

 	    public Color getBackground(Object element){
 			TabData td = (TabData)element;
 			if (isUsers(td.var))
 				return BACKGROUND_FOR_USER_VAR;
 			return null;
 	    }
 	}

 	@Override
 	public void createControls(Composite parent) {
 		super.createControls(parent);
 		usercomp.setLayout(new GridLayout(3, true));
 		Label l1 = new Label(usercomp, SWT.LEFT);
 		l1.setText(UIMessages.getString("EnvironmentTab.0")); //$NON-NLS-1$
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 3;
 		l1.setLayoutData(gd);
 		table = new Table(usercomp, SWT.BORDER | SWT.MULTI | SWT.WRAP | SWT.H_SCROLL | SWT.FULL_SELECTION);
 		table.setHeaderVisible(true);
 		table.setLinesVisible(true);
 		table.addSelectionListener(new SelectionListener() {
 			public void widgetSelected(SelectionEvent e) {
 				updateButtons();
 			}
 			public void widgetDefaultSelected(SelectionEvent e) {
 	    		if (buttonIsEnabled(2) && table.getSelectionIndex() != -1)
     				buttonPressed(2);
 			}});

 		tv = new TableViewer(table);
 		tv.setContentProvider(new IStructuredContentProvider() {

 			@SuppressWarnings("unchecked")
 			public Object[] getElements(Object inputElement) {
 				if (inputElement != null && inputElement instanceof ArrayList) {
 					ArrayList<Object> ar = (ArrayList)inputElement;
 					return ar.toArray(new TabData[0]);
 				}
 				return null;
 			}
 			public void dispose() {}
 			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
 			});
 		tv.setLabelProvider(new EnvironmentLabelProvider(true));
 		// add headers
 		TableColumn tc = new TableColumn(table, SWT.LEFT);
 		tc.setText(UIMessages.getString("EnvironmentTab.1")); //$NON-NLS-1$
 		tc.setWidth(150);
 		tc = new TableColumn(table, SWT.LEFT);
 		tc.setText(UIMessages.getString("EnvironmentTab.2")); //$NON-NLS-1$
 		tc.setWidth(150);
 		if (this.getResDesc() != null) {
 			tc = new TableColumn(table, SWT.LEFT);
 			tc.setText(UIMessages.getString("EnvironmentTab.16"));  //$NON-NLS-1$
 			tc.setWidth(100);
 		}

 		gd = new GridData(GridData.FILL_BOTH);
 		gd.horizontalSpan = 3;
 	    table.setLayoutData(gd);


 	    if (!page.isForPrefs()) {
 	    	// dummy placeholder
 	    	new Label(usercomp, SWT.NONE).setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 	    	lb1 = new Label(usercomp, SWT.BORDER | SWT.CENTER);
 	    	lb1.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 	    	lb1.setToolTipText(UIMessages.getString("EnvironmentTab.15")); //$NON-NLS-1$
 	    	lb1.addMouseListener(new MouseAdapter() {
 	    		@Override
 	    		public void mouseDoubleClick(MouseEvent e) {
 	    			CDTPrefUtil.spinDMode();
 	    			updateData();
 	    		}});

 	    	lb2 = new Label(usercomp, SWT.BORDER | SWT.CENTER);
 	    	lb2.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 	    	lb2.setToolTipText(UIMessages.getString("EnvironmentTab.23")); //$NON-NLS-1$
 	    	lb2.addMouseListener(new MouseAdapter() {
 	    		@Override
 	    		public void mouseDoubleClick(MouseEvent e) {
 	    			CDTPrefUtil.spinWMode();
 	    			updateLbs(null, lb2);
 	    		}});
 	    }
 	    initButtons(new String[] {UIMessages.getString("EnvironmentTab.5"),UIMessages.getString("EnvironmentTab.6"),UIMessages.getString("EnvironmentTab.7"),UIMessages.getString("EnvironmentTab.8"),UIMessages.getString("EnvironmentTab.9")}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
 	}

 	@Override
 	public void buttonPressed(int i) {
 		switch (i) {
 		case 0:
 			handleEnvAddButtonSelected();
 			break;
 		case 1: // select
 			handleEnvSelectButtonSelected();
 			break;
 		case 2: // edit
 			handleEnvEditButtonSelected(table.getSelectionIndex());
 			break;
 		case 3: // remove
 			handleEnvDelButtonSelected(table.getSelectionIndex());
 			break;
 		case 4: // Undefine
 			handleEnvUndefButtonSelected(table.getSelectionIndex());
 			break;
 		}
 		table.setFocus();
 	}

 	@Override
 	protected void updateButtons() {
 		if (table == null || table.isDisposed()) return;

 		boolean canEdit = table.getSelectionCount() == 1;
 		boolean canDel  = false;
 		boolean canUndef = table.getSelectionCount() >= 1;
 		if (canUndef) {
 			for (int i : table.getSelectionIndices()) {
 				IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
 				if (isUsers(var)) {
 				//	if (cfgd == null || !wse.getVariable(var.))
 					canDel = true;
 					break;
 				}
 			}
 		}
 		buttonSetEnabled(2, canEdit); // edit
 		buttonSetEnabled(3, canDel); // delete
 		buttonSetEnabled(4, canUndef); // undefine
 	}

 	@Override
 	protected void updateData(ICResourceDescription _cfgd) {
 		// null means preference configuration
 		cfgd = (_cfgd != null) ? _cfgd.getConfiguration() : null;
 		if (cfgd == null && vars == null)
 			vars = fUserSupplier.getWorkspaceEnvironmentCopy();
 		else
 			ce.setMulti(page.isMultiCfg());
 		updateData();
 	}

 	private void updateData() {
 		IEnvironmentVariable[] _vars = null;
 		if (cfgd != null) {
 			 _vars = ce.getVariables(cfgd);
 		} else {
 			if (vars == null)
 				vars = fUserSupplier.getWorkspaceEnvironmentCopy();
 			_vars = vars.getVariables() ;
 		}

 		data.clear();
 		if (_vars != null) {
 			for (IEnvironmentVariable _var : _vars) {
 				data.add(new TabData(_var, false));
 			}
 		}
 		Collections.sort(data);
 		tv.setInput(data);

 		updateLbs(lb1, lb2);
 		updateButtons();
 	}

 	@Override
 	protected void performApply(ICResourceDescription _src, ICResourceDescription _dst) {
 		ICConfigurationDescription src = _src.getConfiguration();
 		ICConfigurationDescription dst = _dst.getConfiguration();

 		ce.setAppendEnvironment(ce.appendEnvironment(src), dst);
 		IEnvironmentVariable[] v = ce.getVariables(dst);
 		for (IEnvironmentVariable element : v)
 			ce.removeVariable(element.getName(), dst);
 		v = ce.getVariables(src);
 		for (IEnvironmentVariable element : v) {
 			if (ce.isUserVariable(src, element))
 					ce.addVariable(element.getName(), element.getValue(),
 							element.getOperation(), element.getDelimiter(), dst);
 		}
 	}

 	/**
 	 *
 	 */
 	private class MyListSelectionDialog extends ListSelectionDialog {
 		public boolean toAll = false;
 	    public MyListSelectionDialog(Shell parentShell, Object input, IStructuredContentProvider contentProvider) {
 	        super(parentShell, input, contentProvider, new LabelProvider() {}, UIMessages.getString("EnvironmentTab.12")); //$NON-NLS-1$
 	    }
 	    @Override
 		protected Control createDialogArea(Composite parent) {
 	    	Composite composite = (Composite) super.createDialogArea(parent);
 	    	Button b = new Button(composite, SWT.CHECK);
 	    	b.setText(UIMessages.getString("EnvironmentTab.13")); //$NON-NLS-1$
 	    	b.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 	    	if (cfgd == null)
 	    		b.setVisible(false);
 	    	else
 	    		b.addSelectionListener(new SelectionAdapter() {
 	    			@Override
 					public void widgetSelected(SelectionEvent e) {
 	    				toAll = ((Button)e.widget).getSelection();
 	    			}});
 	    	return composite;
 	    }
 	}

 	private void handleEnvEditButtonSelected(int n) {
 		if (n == -1)
 			return;
 		IEnvironmentVariable var = ((TabData)tv.getElementAt(n)).var;
 		EnvDialog dlg = new EnvDialog(usercomp.getShell(),
 				var,
 				UIMessages.getString("EnvironmentTab.11"),  //$NON-NLS-1$
 				false,
 				page.isMultiCfg(),
 				cfgd);
 		if (dlg.open() == Window.OK) {
 			if (cfgd != null)
 				ce.addVariable(	var.getName(), dlg.t2.trim(),
 						IEnvironmentVariable.ENVVAR_REPLACE,
 						var.getDelimiter(), cfgd);
 			else
 				vars.createVariable(dlg.t1.trim(), dlg.t2.trim(),
 						IEnvironmentVariable.ENVVAR_REPLACE, var.getDelimiter());
 			updateData();
 			table.setSelection(n);
 			updateButtons();
 		}
 	}

 	private void handleEnvUndefButtonSelected(int n) {
 		if (n == -1)
 			return;
 		for (int i : table.getSelectionIndices()) {
 			IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
 			if (cfgd == null)
 				vars.createVariable(
 						var.getName(),
 						null,
 						IEnvironmentVariable.ENVVAR_REMOVE,
 						var.getDelimiter());
 			else
 				ce.addVariable(
 						var.getName(),
 						null,
 						IEnvironmentVariable.ENVVAR_REMOVE,
 						var.getDelimiter(), cfgd);
 		}
 		updateData();
 		table.setSelection(n);
 		updateButtons();
 	}

 	private void handleEnvDelButtonSelected(int n) {
 		if (n == -1)
 			return;
 		for (int i : table.getSelectionIndices()) {
 			IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
 			if (cfgd == null)
 				vars.deleteVariable(var.getName());
 			else
 				ce.removeVariable(var.getName(), cfgd);
 		}
 		updateData();
 		int x = table.getItemCount() - 1;
 		if (x >= 0) {
 			table.setSelection(Math.min(x, n));
 			updateButtons();
 		}
 	}

 	private void handleEnvAddButtonSelected() {
 		IEnvironmentVariable var = null;
 		EnvDialog dlg = new EnvDialog(usercomp.getShell(),
 				var,
 				UIMessages.getString("EnvironmentTab.10"), //$NON-NLS-1$
 				true,
 				page.isMultiCfg(),
 				cfgd);
 		if (dlg.open() == Window.OK) {
 			String name = dlg.t1.trim();
 			if (name.length() > 0) {
 				ICConfigurationDescription[] cfgs;
 				if (dlg.toAll)
 					cfgs = page.getCfgsEditable();
 				else
 					cfgs = new ICConfigurationDescription[] {cfgd};
 				if (cfgd == null)
 					vars.createVariable(name, dlg.t2.trim(),
 							IEnvironmentVariable.ENVVAR_APPEND,	SEMI);
 				else
 					for (ICConfigurationDescription cfg : cfgs) {
 						ce.addVariable(name, dlg.t2.trim(),
 								IEnvironmentVariable.ENVVAR_APPEND,
 								SEMI, cfg);
 					}
 				updateData();
 				setPos(name);
 			}
 		}
 	}

 	private void setPos(String name) {
 		if (name == null || name.length() == 0)
 			return;
 		for (int i=0; i<table.getItemCount(); i++) {
 			if (name.equals(table.getItem(i).getText())) {
 				table.setSelection(i);
 				updateButtons();
 				break;
 			}
 		}
 	}

 	private void handleEnvSelectButtonSelected() {
 		// get Environment Variables from the OS
 		Map<?,?> v = EnvironmentReader.getEnvVars();
 		MyListSelectionDialog dialog = new MyListSelectionDialog(usercomp.getShell(), v, createSelectionDialogContentProvider());

 		dialog.setTitle(UIMessages.getString("EnvironmentTab.14")); //$NON-NLS-1$
 		if (dialog.open() == Window.OK) {
 			Object[] selected = dialog.getResult();
 			ICConfigurationDescription[] cfgs;
 			if (dialog.toAll)
 				cfgs = page.getCfgsEditable();
 			else
 				cfgs = new ICConfigurationDescription[] {cfgd};

 			String name = null;
 			for (Object element : selected) {
 				name = (String)element;
 				String value = EMPTY_STR;
 				int x = name.indexOf(LBR);
 				if (x >= 0) {
 					value = name.substring(x + 2, name.length() - 1);
 					name = name.substring(0, x);
 				}

 				if (cfgd == null)
 					vars.createVariable(name, value);
 				else
 					for (ICConfigurationDescription cfg : cfgs) {
 						ce.addVariable(
 								name, value,
 								IEnvironmentVariable.ENVVAR_APPEND,
 								SEMI, cfg);
 				}
 			}
 			updateData();
 			setPos(name);
 		}
 	}

 	private IStructuredContentProvider createSelectionDialogContentProvider() {
 		return new IStructuredContentProvider() {

 			public Object[] getElements(Object inputElement) {
 				String[] els = null;
 				if (inputElement instanceof Map) {
 					@SuppressWarnings("unchecked")
 					Map<String,?> m = (Map)inputElement;
 					els = new String[m.size()];
 					int index = 0;
 					for (Iterator<String> iterator = m.keySet().iterator(); iterator.hasNext(); index++) {
 						String k = iterator.next();
 						els[index] = TextProcessor.process(k + LBR + m.get(k) + RBR);
 					}
 				}
 				Arrays.sort(els, CDTListComparator.getInstance());
 				return els;
 			}
 			public void dispose() {}
 			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
 		};
 	}
 	// This page can be displayed for project only
 	@Override
 	public boolean canBeVisible() {
 		return page.isForProject() || page.isForPrefs();
 	}

 	@Override
 	protected void performOK() {
 		if (vars != null) {
 			if (fUserSupplier.setWorkspaceEnvironment(vars))
 				if (page instanceof PrefPage_Abstract)
 					PrefPage_Abstract.isChanged = true;
 		}
 		vars = null;
 		super.performOK();
 	}

 	@Override
 	protected void performCancel() {
 		vars = null;
 		super.performCancel();
 	}

 	@Override
 	protected void performDefaults() {
 		ce.restoreDefaults(cfgd); // both for proj & prefs
 		vars = null;
 		updateData();
 	}

 	private boolean isUsers(IEnvironmentVariable var) {
 		return cfgd == null ||
 		      (ce.isUserVariable(cfgd, var) &&
 			  ((EnvVarDescriptor)var).getContextInfo().getContext() != null);

 	}


 }
	/*******************************************************************************
	* Copyright (c) 2009, 2010 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM - Initial API and implementation
	*******************************************************************************/
	package org.eclipse.ptp.rdt.sync.ui.properties;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.Map;

	import org.eclipse.cdt.core.envvar.IEnvironmentVariable;
	import org.eclipse.cdt.core.model.util.CDTListComparator;
	import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
	import org.eclipse.cdt.core.settings.model.ICResourceDescription;
	import org.eclipse.cdt.internal.core.envvar.EnvVarDescriptor;
	import org.eclipse.cdt.internal.core.envvar.EnvironmentVariableManager;
	import org.eclipse.cdt.internal.core.envvar.UserDefinedEnvironmentSupplier;
	import org.eclipse.cdt.ui.newui.AbstractCPropertyTab;
	import org.eclipse.cdt.ui.newui.CDTPrefUtil;
	import org.eclipse.cdt.ui.newui.EnvDialog;
	import org.eclipse.cdt.ui.newui.MultiCfgContributedEnvironment;
	import org.eclipse.cdt.ui.newui.PrefPage_Abstract;
	import org.eclipse.cdt.ui.newui.UIMessages;
	import org.eclipse.cdt.utils.envvar.StorableEnvironment;
	import org.eclipse.cdt.utils.spawner.EnvironmentReader;
	import org.eclipse.jface.resource.JFaceResources;
	import org.eclipse.jface.viewers.IColorProvider;
	import org.eclipse.jface.viewers.IFontProvider;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.ITableFontProvider;
	import org.eclipse.jface.viewers.ITableLabelProvider;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.window.Window;
	import org.eclipse.osgi.util.TextProcessor;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.MouseAdapter;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.ui.dialogs.ListSelectionDialog;

	/**
	* @author crecoskie, peterwan
	*
	*/
	public class RemoteEnvironmentTab extends AbstractCPropertyTab {

	private static final String SEMI = ";"; //$NON-NLS-1$
	private static final String LBR = " ["; //$NON-NLS-1$
	private static final String RBR = "]"; //$NON-NLS-1$
	private static final UserDefinedEnvironmentSupplier fUserSupplier = EnvironmentVariableManager.fUserSupplier;

	private final MultiCfgContributedEnvironment ce = new MultiCfgContributedEnvironment();

	private Table table;
	private TableViewer tv;
	private ArrayList<TabData> data = new ArrayList<TabData>();
	private Label lb1, lb2;

	private ICConfigurationDescription cfgd = null;
	private StorableEnvironment vars = null;

	private class TabData implements Comparable<TabData> {
	IEnvironmentVariable var;
	boolean changed;
	TabData(IEnvironmentVariable _var, boolean _changed) {
	var = _var;
	changed = _changed;
	}
	public int compareTo(TabData a) {
	String s = var.getName();
	if (a != null && s != null && a.var != null)
	return (s.compareTo(a.var.getName()));
	return 0;
	}
	}

	private class EnvironmentLabelProvider extends LabelProvider implements ITableLabelProvider, IFontProvider , ITableFontProvider, IColorProvider{
	public EnvironmentLabelProvider(boolean user){
	}
	@Override
	public Image getImage(Object element) {
	return null; // JavaPluginImages.get(JavaPluginImages.IMG_OBJS_REFACTORING_INFO);
	}
	@Override
	public String getText(Object element) {
	return getColumnText(element, 0);
	}
	public Image getColumnImage(Object element, int columnIndex) {
	return null;
	}
	public String getColumnText(Object element, int columnIndex) {
	TabData td = (TabData)element;
	switch(columnIndex){
	case 0:
	return td.var.getName();
	case 1:
	if(td.var.getOperation() == IEnvironmentVariable.ENVVAR_REMOVE)
	return UIMessages.getString(UIMessages.getString("EnvironmentTab.20")); //$NON-NLS-1$
	return td.var.getValue();
	case 2:
	return ce.getOrigin(td.var);
	}
	return EMPTY_STR;
	}

	public Font getFont(Object element) {
	return getFont(element, 0);
	}

	public Font getFont(Object element, int columnIndex) {
	TabData td = (TabData)element;
	switch(columnIndex){
	case 0:
	if (isUsers(td.var))
	return JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT);
	break;
	default:
	break;
	}
	return null;
	}

	public Color getForeground(Object element){
	return null;
	}

	public Color getBackground(Object element){
	TabData td = (TabData)element;
	if (isUsers(td.var))
	return BACKGROUND_FOR_USER_VAR;
	return null;
	}
	}

	@Override
	public void createControls(Composite parent) {
	super.createControls(parent);
	usercomp.setLayout(new GridLayout(3, true));
	Label l1 = new Label(usercomp, SWT.LEFT);
	l1.setText(UIMessages.getString("EnvironmentTab.0")); //$NON-NLS-1$
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 3;
	l1.setLayoutData(gd);
	table = new Table(usercomp, SWT.BORDER \| SWT.MULTI \| SWT.WRAP \| SWT.H_SCROLL \| SWT.FULL_SELECTION);
	table.setHeaderVisible(true);
	table.setLinesVisible(true);
	table.addSelectionListener(new SelectionListener() {
	public void widgetSelected(SelectionEvent e) {
	updateButtons();
	}
	public void widgetDefaultSelected(SelectionEvent e) {
	if (buttonIsEnabled(2) && table.getSelectionIndex() != -1)
	buttonPressed(2);
	}});

	tv = new TableViewer(table);
	tv.setContentProvider(new IStructuredContentProvider() {

	@SuppressWarnings("unchecked")
	public Object[] getElements(Object inputElement) {
	if (inputElement != null && inputElement instanceof ArrayList) {
	ArrayList<Object> ar = (ArrayList)inputElement;
	return ar.toArray(new TabData[0]);
	}
	return null;
	}
	public void dispose() {}
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
	});
	tv.setLabelProvider(new EnvironmentLabelProvider(true));
	// add headers
	TableColumn tc = new TableColumn(table, SWT.LEFT);
	tc.setText(UIMessages.getString("EnvironmentTab.1")); //$NON-NLS-1$
	tc.setWidth(150);
	tc = new TableColumn(table, SWT.LEFT);
	tc.setText(UIMessages.getString("EnvironmentTab.2")); //$NON-NLS-1$
	tc.setWidth(150);
	if (this.getResDesc() != null) {
	tc = new TableColumn(table, SWT.LEFT);
	tc.setText(UIMessages.getString("EnvironmentTab.16")); //$NON-NLS-1$
	tc.setWidth(100);
	}

	gd = new GridData(GridData.FILL_BOTH);
	gd.horizontalSpan = 3;
	table.setLayoutData(gd);


	if (!page.isForPrefs()) {
	// dummy placeholder
	new Label(usercomp, SWT.NONE).setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	lb1 = new Label(usercomp, SWT.BORDER \| SWT.CENTER);
	lb1.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	lb1.setToolTipText(UIMessages.getString("EnvironmentTab.15")); //$NON-NLS-1$
	lb1.addMouseListener(new MouseAdapter() {
	@Override
	public void mouseDoubleClick(MouseEvent e) {
	CDTPrefUtil.spinDMode();
	updateData();
	}});

	lb2 = new Label(usercomp, SWT.BORDER \| SWT.CENTER);
	lb2.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	lb2.setToolTipText(UIMessages.getString("EnvironmentTab.23")); //$NON-NLS-1$
	lb2.addMouseListener(new MouseAdapter() {
	@Override
	public void mouseDoubleClick(MouseEvent e) {
	CDTPrefUtil.spinWMode();
	updateLbs(null, lb2);
	}});
	}
	initButtons(new String[] {UIMessages.getString("EnvironmentTab.5"),UIMessages.getString("EnvironmentTab.6"),UIMessages.getString("EnvironmentTab.7"),UIMessages.getString("EnvironmentTab.8"),UIMessages.getString("EnvironmentTab.9")}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
	}

	@Override
	public void buttonPressed(int i) {
	switch (i) {
	case 0:
	handleEnvAddButtonSelected();
	break;
	case 1: // select
	handleEnvSelectButtonSelected();
	break;
	case 2: // edit
	handleEnvEditButtonSelected(table.getSelectionIndex());
	break;
	case 3: // remove
	handleEnvDelButtonSelected(table.getSelectionIndex());
	break;
	case 4: // Undefine
	handleEnvUndefButtonSelected(table.getSelectionIndex());
	break;
	}
	table.setFocus();
	}

	@Override
	protected void updateButtons() {
	if (table == null \|\| table.isDisposed()) return;

	boolean canEdit = table.getSelectionCount() == 1;
	boolean canDel = false;
	boolean canUndef = table.getSelectionCount() >= 1;
	if (canUndef) {
	for (int i : table.getSelectionIndices()) {
	IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
	if (isUsers(var)) {
	// if (cfgd == null \|\| !wse.getVariable(var.))
	canDel = true;
	break;
	}
	}
	}
	buttonSetEnabled(2, canEdit); // edit
	buttonSetEnabled(3, canDel); // delete
	buttonSetEnabled(4, canUndef); // undefine
	}

	@Override
	protected void updateData(ICResourceDescription _cfgd) {
	// null means preference configuration
	cfgd = (_cfgd != null) ? _cfgd.getConfiguration() : null;
	if (cfgd == null && vars == null)
	vars = fUserSupplier.getWorkspaceEnvironmentCopy();
	else
	ce.setMulti(page.isMultiCfg());
	updateData();
	}

	private void updateData() {
	IEnvironmentVariable[] _vars = null;
	if (cfgd != null) {
	_vars = ce.getVariables(cfgd);
	} else {
	if (vars == null)
	vars = fUserSupplier.getWorkspaceEnvironmentCopy();
	_vars = vars.getVariables() ;
	}

	data.clear();
	if (_vars != null) {
	for (IEnvironmentVariable _var : _vars) {
	data.add(new TabData(_var, false));
	}
	}
	Collections.sort(data);
	tv.setInput(data);

	updateLbs(lb1, lb2);
	updateButtons();
	}

	@Override
	protected void performApply(ICResourceDescription _src, ICResourceDescription _dst) {
	ICConfigurationDescription src = _src.getConfiguration();
	ICConfigurationDescription dst = _dst.getConfiguration();

	ce.setAppendEnvironment(ce.appendEnvironment(src), dst);
	IEnvironmentVariable[] v = ce.getVariables(dst);
	for (IEnvironmentVariable element : v)
	ce.removeVariable(element.getName(), dst);
	v = ce.getVariables(src);
	for (IEnvironmentVariable element : v) {
	if (ce.isUserVariable(src, element))
	ce.addVariable(element.getName(), element.getValue(),
	element.getOperation(), element.getDelimiter(), dst);
	}
	}

	/**
	*
	*/
	private class MyListSelectionDialog extends ListSelectionDialog {
	public boolean toAll = false;
	public MyListSelectionDialog(Shell parentShell, Object input, IStructuredContentProvider contentProvider) {
	super(parentShell, input, contentProvider, new LabelProvider() {}, UIMessages.getString("EnvironmentTab.12")); //$NON-NLS-1$
	}
	@Override
	protected Control createDialogArea(Composite parent) {
	Composite composite = (Composite) super.createDialogArea(parent);
	Button b = new Button(composite, SWT.CHECK);
	b.setText(UIMessages.getString("EnvironmentTab.13")); //$NON-NLS-1$
	b.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	if (cfgd == null)
	b.setVisible(false);
	else
	b.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	toAll = ((Button)e.widget).getSelection();
	}});
	return composite;
	}
	}

	private void handleEnvEditButtonSelected(int n) {
	if (n == -1)
	return;
	IEnvironmentVariable var = ((TabData)tv.getElementAt(n)).var;
	EnvDialog dlg = new EnvDialog(usercomp.getShell(),
	var,
	UIMessages.getString("EnvironmentTab.11"), //$NON-NLS-1$
	false,
	page.isMultiCfg(),
	cfgd);
	if (dlg.open() == Window.OK) {
	if (cfgd != null)
	ce.addVariable( var.getName(), dlg.t2.trim(),
	IEnvironmentVariable.ENVVAR_REPLACE,
	var.getDelimiter(), cfgd);
	else
	vars.createVariable(dlg.t1.trim(), dlg.t2.trim(),
	IEnvironmentVariable.ENVVAR_REPLACE, var.getDelimiter());
	updateData();
	table.setSelection(n);
	updateButtons();
	}
	}

	private void handleEnvUndefButtonSelected(int n) {
	if (n == -1)
	return;
	for (int i : table.getSelectionIndices()) {
	IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
	if (cfgd == null)
	vars.createVariable(
	var.getName(),
	null,
	IEnvironmentVariable.ENVVAR_REMOVE,
	var.getDelimiter());
	else
	ce.addVariable(
	var.getName(),
	null,
	IEnvironmentVariable.ENVVAR_REMOVE,
	var.getDelimiter(), cfgd);
	}
	updateData();
	table.setSelection(n);
	updateButtons();
	}

	private void handleEnvDelButtonSelected(int n) {
	if (n == -1)
	return;
	for (int i : table.getSelectionIndices()) {
	IEnvironmentVariable var = ((TabData)tv.getElementAt(i)).var;
	if (cfgd == null)
	vars.deleteVariable(var.getName());
	else
	ce.removeVariable(var.getName(), cfgd);
	}
	updateData();
	int x = table.getItemCount() - 1;
	if (x >= 0) {
	table.setSelection(Math.min(x, n));
	updateButtons();
	}
	}

	private void handleEnvAddButtonSelected() {
	IEnvironmentVariable var = null;
	EnvDialog dlg = new EnvDialog(usercomp.getShell(),
	var,
	UIMessages.getString("EnvironmentTab.10"), //$NON-NLS-1$
	true,
	page.isMultiCfg(),
	cfgd);
	if (dlg.open() == Window.OK) {
	String name = dlg.t1.trim();
	if (name.length() > 0) {
	ICConfigurationDescription[] cfgs;
	if (dlg.toAll)
	cfgs = page.getCfgsEditable();
	else
	cfgs = new ICConfigurationDescription[] {cfgd};
	if (cfgd == null)
	vars.createVariable(name, dlg.t2.trim(),
	IEnvironmentVariable.ENVVAR_APPEND, SEMI);
	else
	for (ICConfigurationDescription cfg : cfgs) {
	ce.addVariable(name, dlg.t2.trim(),
	IEnvironmentVariable.ENVVAR_APPEND,
	SEMI, cfg);
	}
	updateData();
	setPos(name);
	}
	}
	}

	private void setPos(String name) {
	if (name == null \|\| name.length() == 0)
	return;
	for (int i=0; i<table.getItemCount(); i++) {
	if (name.equals(table.getItem(i).getText())) {
	table.setSelection(i);
	updateButtons();
	break;
	}
	}
	}

	private void handleEnvSelectButtonSelected() {
	// get Environment Variables from the OS
	Map<?,?> v = EnvironmentReader.getEnvVars();
	MyListSelectionDialog dialog = new MyListSelectionDialog(usercomp.getShell(), v, createSelectionDialogContentProvider());

	dialog.setTitle(UIMessages.getString("EnvironmentTab.14")); //$NON-NLS-1$
	if (dialog.open() == Window.OK) {
	Object[] selected = dialog.getResult();
	ICConfigurationDescription[] cfgs;
	if (dialog.toAll)
	cfgs = page.getCfgsEditable();
	else
	cfgs = new ICConfigurationDescription[] {cfgd};

	String name = null;
	for (Object element : selected) {
	name = (String)element;
	String value = EMPTY_STR;
	int x = name.indexOf(LBR);
	if (x >= 0) {
	value = name.substring(x + 2, name.length() - 1);
	name = name.substring(0, x);
	}

	if (cfgd == null)
	vars.createVariable(name, value);
	else
	for (ICConfigurationDescription cfg : cfgs) {
	ce.addVariable(
	name, value,
	IEnvironmentVariable.ENVVAR_APPEND,
	SEMI, cfg);
	}
	}
	updateData();
	setPos(name);
	}
	}

	private IStructuredContentProvider createSelectionDialogContentProvider() {
	return new IStructuredContentProvider() {

	public Object[] getElements(Object inputElement) {
	String[] els = null;
	if (inputElement instanceof Map) {
	@SuppressWarnings("unchecked")
	Map<String,?> m = (Map)inputElement;
	els = new String[m.size()];
	int index = 0;
	for (Iterator<String> iterator = m.keySet().iterator(); iterator.hasNext(); index++) {
	String k = iterator.next();
	els[index] = TextProcessor.process(k + LBR + m.get(k) + RBR);
	}
	}
	Arrays.sort(els, CDTListComparator.getInstance());
	return els;
	}
	public void dispose() {}
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
	};
	}
	// This page can be displayed for project only
	@Override
	public boolean canBeVisible() {
	return page.isForProject() \|\| page.isForPrefs();
	}

	@Override
	protected void performOK() {
	if (vars != null) {
	if (fUserSupplier.setWorkspaceEnvironment(vars))
	if (page instanceof PrefPage_Abstract)
	PrefPage_Abstract.isChanged = true;
	}
	vars = null;
	super.performOK();
	}

	@Override
	protected void performCancel() {
	vars = null;
	super.performCancel();
	}

	@Override
	protected void performDefaults() {
	ce.restoreDefaults(cfgd); // both for proj & prefs
	vars = null;
	updateData();
	}

	private boolean isUsers(IEnvironmentVariable var) {
	return cfgd == null \|\|
	(ce.isUserVariable(cfgd, var) &&
	((EnvVarDescriptor)var).getContextInfo().getContext() != null);

	}


	}