build/org.eclipse.cdt.make.ui/src/org/eclipse/cdt/make/ui/dialogs/BuildPathInfoBlock.java - cdt/org.eclipse.cdt - Git at Google

 /**********************************************************************
  * Copyright (c) 2002,2003 Rational Software Corporation and others.
  * All rights reserved.   This program and the accompanying materials
  * are made available under the terms of the Common Public License v0.5
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v05.html
  *
  * Contributors:
  * IBM Rational Software - Initial API and implementation
  * QNX Software Systems - Move to Make plugin
 ***********************************************************************/
 package org.eclipse.cdt.make.ui.dialogs;

 import java.util.ArrayList;
 import java.util.StringTokenizer;

 import org.eclipse.cdt.internal.ui.util.SWTUtil;
 import org.eclipse.cdt.make.core.MakeCorePlugin;
 import org.eclipse.cdt.make.core.MakeScannerInfo;
 import org.eclipse.cdt.make.core.MakeScannerProvider;
 import org.eclipse.cdt.make.internal.ui.MakeUIPlugin;
 import org.eclipse.cdt.make.ui.IMakeHelpContextIds;
 import org.eclipse.cdt.ui.dialogs.AbstractCOptionPage;
 import org.eclipse.cdt.utils.ui.controls.ControlFactory;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Preferences;
 import org.eclipse.jface.dialogs.InputDialog;
 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.graphics.Font;
 import org.eclipse.swt.graphics.FontData;
 import org.eclipse.swt.layout.GridData;
 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.List;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.help.WorkbenchHelp;

 public class BuildPathInfoBlock extends AbstractCOptionPage {
 	private static final int PROJECT_LIST_MULTIPLIER = 10;

 	private static final String PREF_SYMBOLS = "ScannerSymbols";
 	private static final String PREF_INCLUDES = "ScannerIncludes";
 	private static final String PREFIX = "BuildPathInfoBlock"; //$NON-NLS-1$
 	private static final String LABEL = PREFIX + ".label"; //$NON-NLS-1$
 	private static final String PATHS = PREFIX + ".paths"; //$NON-NLS-1$
 	private static final String SYMBOLS = PREFIX + ".symbols"; //$NON-NLS-1$
 	private static final String BROWSE = PREFIX + ".browse"; //$NON-NLS-1$
 	private static final String PATH_TITLE = BROWSE + ".path"; //$NON-NLS-1$
 	private static final String EDIT_PATH_TITLE = BROWSE + ".path.edit"; //$NON-NLS-1$
 	private static final String PATH_LABEL = BROWSE + ".path.label"; //$NON-NLS-1$
 	private static final String SYMBOL_TITLE = BROWSE + ".symbol"; //$NON-NLS-1$
 	private static final String EDIT_SYMBOL_TITLE = BROWSE + ".symbol.edit"; //$NON-NLS-1$
 	private static final String SYMBOL_LABEL = BROWSE + ".symbol.label"; //$NON-NLS-1$
 	private static final String NEW = "BuildPropertyCommon.label.new"; //$NON-NLS-1$
 	private static final String EDIT = "BuildPropertyCommon.label.edit"; //$NON-NLS-1$
 	private static final String REMOVE = "BuildPropertyCommon.label.remove"; //$NON-NLS-1$
 	private static final String UP = "BuildPropertyCommon.label.up"; //$NON-NLS-1$
 	private static final String DOWN = "BuildPropertyCommon.label.down"; //$NON-NLS-1$

 	private List pathList;
 	private List symbolList;
 	private Composite pathButtonComp;
 	private Button addPath;
 	private Button editPath;
 	private Button removePath;
 	private Button pathUp;
 	private Button pathDown;
 	private Composite symbolButtonComp;
 	private Button addSymbol;
 	private Button editSymbol;
 	private Button removeSymbol;
 	private Button symbolUp;
 	private Button symbolDown;
 	private Shell shell;

 	public BuildPathInfoBlock() {
 		super(MakeUIPlugin.getResourceString(LABEL));
 		setDescription("Set the include paths and preprocessor symbols for this project");
 	}

 	private void createPathListButtons(Composite parent) {
 		// Create a composite for the buttons
 		pathButtonComp = ControlFactory.createComposite(parent, 1);
 		pathButtonComp.setFont(parent.getFont());

 		// Add the buttons
 		addPath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(NEW));
 		addPath.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleAddPath();
 			}
 		});
 		addPath.setEnabled(true);
 		addPath.setFont(parent.getFont());
 		addPath.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(addPath);

 		editPath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(EDIT));
 		editPath.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				editPathListItem();
 			}
 		});
 		editPath.setEnabled(true);
 		editPath.setFont(parent.getFont());
 		editPath.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(editPath);

 		removePath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(REMOVE));
 		removePath.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleRemovePath();
 			}
 		});
 		removePath.setFont(parent.getFont());
 		removePath.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(removePath);

 		pathUp = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(UP));
 		pathUp.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handlePathUp();
 			}
 		});
 		pathUp.setFont(parent.getFont());
 		pathUp.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(pathUp);

 		pathDown = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(DOWN));
 		pathDown.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handlePathDown();
 			}
 		});
 		pathDown.setFont(parent.getFont());
 		pathDown.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(pathDown);

 	}

 	private void createPathListControl(Composite parent, int numColumns) {
 		// Create the list
 		pathList = new List(parent, SWT.BORDER | SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL);
 		pathList.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				enablePathButtons();
 			}
 		});
 		pathList.addMouseListener(new MouseAdapter() {
 			public void mouseDoubleClick(MouseEvent e) {
 				editPathListItem();
 			}
 		});

 		// Make it occupy the first 2 columns
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		gd.grabExcessHorizontalSpace = true;
 		gd.horizontalSpan = numColumns - 1;
 		gd.heightHint = getDefaultFontHeight(pathList, PROJECT_LIST_MULTIPLIER);
 		pathList.setLayoutData(gd);
 		pathList.setFont(parent.getFont());

 	}

 	/**
 	 * Get the defualt widget height for the supplied control.
 	 * @return int
 	 * @param control - the control being queried about fonts
 	 * @param lines - the number of lines to be shown on the table.
 	 */
 	private static int getDefaultFontHeight(Control control, int lines) {
 		FontData[] viewerFontData = control.getFont().getFontData();
 		int fontHeight = 10;

 		//If we have no font data use our guess
 		if (viewerFontData.length > 0)
 			fontHeight = viewerFontData[0].getHeight();
 		return lines * fontHeight;
 	}

 	private void createSymbolListButtons(Composite parent) {
 		// Create a composite for the buttons
 		symbolButtonComp = ControlFactory.createComposite(parent, 1);
 		symbolButtonComp.setFont(parent.getFont());

 		// Add the buttons
 		addSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(NEW));
 		addSymbol.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleAddSymbol();
 			}
 		});
 		addSymbol.setEnabled(true);
 		addSymbol.setFont(parent.getFont());
 		addSymbol.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(addSymbol);

 		editSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(EDIT));
 		editSymbol.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				editSymbolListItem();
 			}
 		});
 		editSymbol.setEnabled(true);
 		editSymbol.setFont(parent.getFont());
 		editSymbol.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(editSymbol);

 		removeSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(REMOVE));
 		removeSymbol.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleRemoveSymbol();
 			}
 		});
 		removeSymbol.setFont(parent.getFont());
 		removeSymbol.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(removeSymbol);

 		symbolUp = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(UP));
 		symbolUp.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleSymbolUp();
 			}
 		});
 		symbolUp.setFont(parent.getFont());
 		symbolUp.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(symbolUp);

 		symbolDown = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(DOWN));
 		symbolDown.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleSymbolDown();
 			}
 		});
 		symbolDown.setFont(parent.getFont());
 		symbolDown.setLayoutData(new GridData());
 		SWTUtil.setButtonDimensionHint(symbolDown);
 	}

 	private void createSymbolListControl(Composite parent, int numColumns) {
 		// Create the list
 		symbolList = new List(parent, SWT.BORDER | SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL);
 		symbolList.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				enableSymbolButtons();
 			}
 		});
 		symbolList.addMouseListener(new MouseAdapter() {
 			public void mouseDoubleClick(MouseEvent e) {
 				editSymbolListItem();
 			}
 		});

 		// Make it occupy the first n-1 columns
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		gd.horizontalSpan = numColumns - 1;
 		gd.grabExcessHorizontalSpace = true;
 		gd.heightHint = getDefaultFontHeight(pathList, PROJECT_LIST_MULTIPLIER);
 		symbolList.setLayoutData(gd);
 		symbolList.setFont(parent.getFont());

 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.ui.wizards.IWizardTab#doRun(org.eclipse.core.resources.IProject, org.eclipse.core.runtime.IProgressMonitor)
 	 */
 	public void performApply(IProgressMonitor monitor) throws CoreException {
 		if (monitor == null) {
 			monitor = new NullProgressMonitor();
 		}
 		if (getContainer().getProject() != null) {
 			// Store the paths and symbols
 			monitor.beginTask("Setting Scanner Info", 3);
 			MakeScannerInfo info = MakeScannerProvider.getDefault().getMakeScannerInfo(getContainer().getProject(), false);
 			info.setIncludePaths(getPathListContents());
 			monitor.worked(1);
 			info.setPreprocessorSymbols(getSymbolListContents());
 			monitor.worked(1);
 			info.update();
 			monitor.done();
 		} else {
 			setIncludes(MakeCorePlugin.getDefault().getPluginPreferences());
 			setSymbols(MakeCorePlugin.getDefault().getPluginPreferences());
 		}
 	}

 	public void performDefaults() {
 		pathList.removeAll();
 		symbolList.removeAll();
 		if (getContainer().getProject() != null) {
 			pathList.setItems(getIncludes(MakeCorePlugin.getDefault().getPluginPreferences()));
 			symbolList.setItems(getSymbols(MakeCorePlugin.getDefault().getPluginPreferences()));
 		}
 		getContainer().updateContainer();
 	}

 	private void setSymbols(Preferences prefs) {
 		prefs.setValue(PREF_SYMBOLS, stringArrayToString(getSymbolListContents()));
 	}

 	private void setIncludes(Preferences prefs) {
 		prefs.setValue(PREF_INCLUDES, stringArrayToString(getPathListContents()));
 	}

 	private String stringArrayToString(String[] strings) {
 		StringBuffer buf = new StringBuffer();
 		for (int i = 0; i < strings.length; i++) {
 			buf.append(strings[i]).append(';');
 		}
 		return buf.toString();
 	}

 	private String[] getSymbols(Preferences prefs) {
 		String syms = prefs.getString(PREF_SYMBOLS);
 		return parseStringToList(syms);
 	}

 	private String[] getIncludes(Preferences prefs) {
 		String syms = prefs.getString(PREF_INCLUDES);
 		return parseStringToList(syms);
 	}

 	private String[] parseStringToList(String syms) {
 		if (syms != null && syms.length() > 0) {
 			StringTokenizer tok = new StringTokenizer(syms, ";");
 			ArrayList list = new ArrayList(tok.countTokens());
 			while (tok.hasMoreElements()) {
 				list.add(tok.nextToken());
 			}
 			return (String[]) list.toArray(new String[list.size()]);
 		}
 		return new String[0];
 	}

 	/*
 	 * Double-click handler to allow edit of path information
 	 */
 	protected void editPathListItem() {
 		// Edit the selection index
 		int index = pathList.getSelectionIndex();
 		if (index != -1) {
 			String selItem = pathList.getItem(index);
 			if (selItem != null) {
 				InputDialog dialog =
 					new InputDialog(
 						shell,
 						MakeUIPlugin.getResourceString(EDIT_PATH_TITLE),
 						MakeUIPlugin.getResourceString(PATH_LABEL),
 						selItem,
 						null);
 				String newItem = null;
 				if (dialog.open() == InputDialog.OK) {
 					newItem = dialog.getValue();
 					if (newItem != null && !newItem.equals(selItem)) {
 						pathList.setItem(index, newItem);
 					}
 				}
 			}
 		}
 	}

 	/*
 	 * Double-click handler to allow edit of symbol information
 	 */
 	protected void editSymbolListItem() {
 		// Edit the selection index
 		int index = symbolList.getSelectionIndex();
 		if (index != -1) {
 			String selItem = symbolList.getItem(index);
 			if (selItem != null) {
 				InputDialog dialog =
 					new InputDialog(
 						shell,
 						MakeUIPlugin.getResourceString(EDIT_SYMBOL_TITLE),
 						MakeUIPlugin.getResourceString(SYMBOL_LABEL),
 						selItem,
 						null);
 				String newItem = null;
 				if (dialog.open() == InputDialog.OK) {
 					newItem = dialog.getValue();
 					if (newItem != null && !newItem.equals(selItem)) {
 						symbolList.setItem(index, newItem);
 					}
 				}
 			}
 		}
 	}

 	/*
 	 * Enables the buttons on the path control if the right conditions are met
 	 */
 	void enablePathButtons() {
 		// Enable the remove button if there is at least 1 item in the list
 		int items = pathList.getItemCount();
 		if (items > 0) {
 			editPath.setEnabled(true);
 			removePath.setEnabled(true);
 			// Enable the up/down buttons depending on what item is selected
 			int index = pathList.getSelectionIndex();
 			pathUp.setEnabled(items > 1 && index > 0);
 			pathDown.setEnabled(items > 1 && index < (items - 1));
 		} else {
 			editPath.setEnabled(false);
 			removePath.setEnabled(false);
 			pathUp.setEnabled(false);
 			pathDown.setEnabled(false);
 		}
 	}

 	void enableSymbolButtons() {
 		// Enable the remove button if there is at least 1 item in the list
 		int items = symbolList.getItemCount();
 		if (items > 0) {
 			editSymbol.setEnabled(true);
 			removeSymbol.setEnabled(true);
 			// Enable the up/down buttons depending on what item is selected
 			int index = symbolList.getSelectionIndex();
 			symbolUp.setEnabled(items > 1 && index > 0);
 			symbolDown.setEnabled(items > 1 && index < (items - 1));
 		} else {
 			editSymbol.setEnabled(false);
 			removeSymbol.setEnabled(false);
 			symbolUp.setEnabled(false);
 			symbolDown.setEnabled(false);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.ui.wizards.IWizardTab#getControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite parent) {
 		// Create the composite control for the tab
 		int tabColumns = 3;
 		Font font = parent.getFont();
 		Composite composite = ControlFactory.createComposite(parent, tabColumns);
 		composite.setFont(font);
 		GridData gd;
 		setControl(composite);

 		WorkbenchHelp.setHelp(getControl(), IMakeHelpContextIds.MAKE_PATH_SYMBOL_SETTINGS);

 		// Create a label for the include paths control
 		Label paths = ControlFactory.createLabel(composite, MakeUIPlugin.getResourceString(PATHS));
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = tabColumns;
 		paths.setLayoutData(gd);
 		paths.setFont(font);

 		//Create the list and button controls
 		createPathListControl(composite, tabColumns);
 		createPathListButtons(composite);
 		enablePathButtons();

 		// Create a label for the symbols control
 		Label symbols = ControlFactory.createLabel(composite, MakeUIPlugin.getResourceString(SYMBOLS));
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = tabColumns;
 		symbols.setLayoutData(gd);
 		symbols.setFont(font);

 		// Create list and button controls for symbols
 		createSymbolListControl(composite, tabColumns);
 		createSymbolListButtons(composite);
 		enableSymbolButtons();

 		setListContents();
 		pathList.select(0);
 		enablePathButtons();
 		symbolList.select(0);
 		enableSymbolButtons();
 	}

 	private String[] getPathListContents() {
 		return pathList.getItems();
 	}

 	private String[] getSymbolListContents() {
 		return symbolList.getItems();
 	}

 	protected void handleAddPath() {
 		// Popup an entry dialog
 		InputDialog dialog = new InputDialog(shell, MakeUIPlugin.getResourceString(PATH_TITLE), MakeUIPlugin.getResourceString(PATH_LABEL), "", null); //$NON-NLS-1$
 		String path = null;
 		if (dialog.open() == InputDialog.OK) {
 			path = dialog.getValue();
 		}
 		if (path != null && path.length() > 0) {
 			pathList.add(path);
 			pathList.select(pathList.getItemCount() - 1);
 			enablePathButtons();
 		}
 	}

 	protected void handleAddSymbol() {
 		// Popup an entry dialog
 		InputDialog dialog = new InputDialog(shell, MakeUIPlugin.getResourceString(SYMBOL_TITLE), MakeUIPlugin.getResourceString(SYMBOL_LABEL), "", null); //$NON-NLS-1$
 		String symbol = null;
 		if (dialog.open() == InputDialog.OK) {
 			symbol = dialog.getValue();
 		}
 		if (symbol != null && symbol.length() > 0) {
 			symbolList.add(symbol);
 			symbolList.select(symbolList.getItemCount() - 1);
 			enableSymbolButtons();
 		}
 	}

 	protected void handlePathDown() {
 		// Get the selection index
 		int index = pathList.getSelectionIndex();
 		int items = pathList.getItemCount();
 		if (index == -1 || index == items - 1) {
 			return;
 		}
 		// Swap the items in the list
 		String selItem = pathList.getItem(index);
 		pathList.remove(index);
 		if (index + 1 == items) {
 			pathList.add(selItem);
 		} else {
 			pathList.add(selItem, ++index);
 		}

 		// Keep the swapped item selected
 		pathList.select(index);
 		enablePathButtons();
 	}

 	protected void handlePathUp() {
 		// Get the selection index
 		int index = pathList.getSelectionIndex();
 		if (index == -1 || index == 0) {
 			return;
 		}
 		// Swap the items in the list
 		String selItem = pathList.getItem(index);
 		pathList.remove(index);
 		pathList.add(selItem, --index);

 		// Keep the index selected
 		pathList.select(index);
 		enablePathButtons();
 	}

 	protected void handleRemovePath() {
 		// Get the selection index
 		int index = pathList.getSelectionIndex();
 		if (index == -1) {
 			return;
 		}

 		// Remove the element at that index
 		pathList.remove(index);
 		index = index - 1 < 0 ? 0 : index - 1;
 		pathList.select(index);

 		// Check if the buttons should still be enabled
 		enablePathButtons();
 	}

 	protected void handleRemoveSymbol() {
 		// Get the selection index
 		int index = symbolList.getSelectionIndex();
 		if (index == -1) {
 			return;
 		}
 		// Remove the item at that index
 		symbolList.remove(index);
 		index = index - 1 < 0 ? 0 : index - 1;
 		symbolList.select(index);
 		// Check if the button state should be toggled
 		enableSymbolButtons();
 	}

 	protected void handleSymbolDown() {
 		// Get the selection index
 		int index = symbolList.getSelectionIndex();
 		int items = symbolList.getItemCount();
 		if (index == -1 || index == items - 1) {
 			return;
 		}
 		// Swap the items in the list
 		String selItem = symbolList.getItem(index);
 		symbolList.remove(index);
 		if (index + 1 == items) {
 			symbolList.add(selItem);
 		} else {
 			symbolList.add(selItem, ++index);
 		}

 		// Keep the swapped item selected
 		symbolList.select(index);
 		enableSymbolButtons();
 	}

 	protected void handleSymbolUp() {
 		// Get the selection index
 		int index = symbolList.getSelectionIndex();
 		if (index == -1 || index == 0) {
 			return;
 		}
 		// Swap the items in the list
 		String selItem = symbolList.getItem(index);
 		symbolList.remove(index);
 		symbolList.add(selItem, --index);

 		// Keep the index selected
 		symbolList.select(index);
 		enableSymbolButtons();
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.ui.wizards.IWizardTab#isValid()
 	 */
 	public boolean isValid() {
 		// Info on this page is not critical
 		return true;
 	}

 	private void setListContents() {
 		if (getContainer().getProject() != null) {
 			MakeScannerInfo info;
 			try {
 				info = MakeScannerProvider.getDefault().getMakeScannerInfo(getContainer().getProject(), false);
 				pathList.setItems(info.getIncludePaths());
 				symbolList.setItems(info.getPreprocessorSymbols());
 			} catch (CoreException e) {
 			}
 		} else {
 			pathList.setItems(getIncludes(MakeCorePlugin.getDefault().getPluginPreferences()));
 			symbolList.setItems(getSymbols(MakeCorePlugin.getDefault().getPluginPreferences()));
 		}
 	}
 }
	/**********************************************************************
	* Copyright (c) 2002,2003 Rational Software Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v0.5
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v05.html
	*
	* Contributors:
	* IBM Rational Software - Initial API and implementation
	* QNX Software Systems - Move to Make plugin
	***********************************************************************/
	package org.eclipse.cdt.make.ui.dialogs;

	import java.util.ArrayList;
	import java.util.StringTokenizer;

	import org.eclipse.cdt.internal.ui.util.SWTUtil;
	import org.eclipse.cdt.make.core.MakeCorePlugin;
	import org.eclipse.cdt.make.core.MakeScannerInfo;
	import org.eclipse.cdt.make.core.MakeScannerProvider;
	import org.eclipse.cdt.make.internal.ui.MakeUIPlugin;
	import org.eclipse.cdt.make.ui.IMakeHelpContextIds;
	import org.eclipse.cdt.ui.dialogs.AbstractCOptionPage;
	import org.eclipse.cdt.utils.ui.controls.ControlFactory;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Preferences;
	import org.eclipse.jface.dialogs.InputDialog;
	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.graphics.Font;
	import org.eclipse.swt.graphics.FontData;
	import org.eclipse.swt.layout.GridData;
	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.List;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.ui.help.WorkbenchHelp;

	public class BuildPathInfoBlock extends AbstractCOptionPage {
	private static final int PROJECT_LIST_MULTIPLIER = 10;

	private static final String PREF_SYMBOLS = "ScannerSymbols";
	private static final String PREF_INCLUDES = "ScannerIncludes";
	private static final String PREFIX = "BuildPathInfoBlock"; //$NON-NLS-1$
	private static final String LABEL = PREFIX + ".label"; //$NON-NLS-1$
	private static final String PATHS = PREFIX + ".paths"; //$NON-NLS-1$
	private static final String SYMBOLS = PREFIX + ".symbols"; //$NON-NLS-1$
	private static final String BROWSE = PREFIX + ".browse"; //$NON-NLS-1$
	private static final String PATH_TITLE = BROWSE + ".path"; //$NON-NLS-1$
	private static final String EDIT_PATH_TITLE = BROWSE + ".path.edit"; //$NON-NLS-1$
	private static final String PATH_LABEL = BROWSE + ".path.label"; //$NON-NLS-1$
	private static final String SYMBOL_TITLE = BROWSE + ".symbol"; //$NON-NLS-1$
	private static final String EDIT_SYMBOL_TITLE = BROWSE + ".symbol.edit"; //$NON-NLS-1$
	private static final String SYMBOL_LABEL = BROWSE + ".symbol.label"; //$NON-NLS-1$
	private static final String NEW = "BuildPropertyCommon.label.new"; //$NON-NLS-1$
	private static final String EDIT = "BuildPropertyCommon.label.edit"; //$NON-NLS-1$
	private static final String REMOVE = "BuildPropertyCommon.label.remove"; //$NON-NLS-1$
	private static final String UP = "BuildPropertyCommon.label.up"; //$NON-NLS-1$
	private static final String DOWN = "BuildPropertyCommon.label.down"; //$NON-NLS-1$

	private List pathList;
	private List symbolList;
	private Composite pathButtonComp;
	private Button addPath;
	private Button editPath;
	private Button removePath;
	private Button pathUp;
	private Button pathDown;
	private Composite symbolButtonComp;
	private Button addSymbol;
	private Button editSymbol;
	private Button removeSymbol;
	private Button symbolUp;
	private Button symbolDown;
	private Shell shell;

	public BuildPathInfoBlock() {
	super(MakeUIPlugin.getResourceString(LABEL));
	setDescription("Set the include paths and preprocessor symbols for this project");
	}

	private void createPathListButtons(Composite parent) {
	// Create a composite for the buttons
	pathButtonComp = ControlFactory.createComposite(parent, 1);
	pathButtonComp.setFont(parent.getFont());

	// Add the buttons
	addPath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(NEW));
	addPath.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleAddPath();
	}
	});
	addPath.setEnabled(true);
	addPath.setFont(parent.getFont());
	addPath.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(addPath);

	editPath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(EDIT));
	editPath.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	editPathListItem();
	}
	});
	editPath.setEnabled(true);
	editPath.setFont(parent.getFont());
	editPath.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(editPath);

	removePath = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(REMOVE));
	removePath.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleRemovePath();
	}
	});
	removePath.setFont(parent.getFont());
	removePath.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(removePath);

	pathUp = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(UP));
	pathUp.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handlePathUp();
	}
	});
	pathUp.setFont(parent.getFont());
	pathUp.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(pathUp);

	pathDown = ControlFactory.createPushButton(pathButtonComp, MakeUIPlugin.getResourceString(DOWN));
	pathDown.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handlePathDown();
	}
	});
	pathDown.setFont(parent.getFont());
	pathDown.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(pathDown);

	}

	private void createPathListControl(Composite parent, int numColumns) {
	// Create the list
	pathList = new List(parent, SWT.BORDER \| SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL);
	pathList.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	enablePathButtons();
	}
	});
	pathList.addMouseListener(new MouseAdapter() {
	public void mouseDoubleClick(MouseEvent e) {
	editPathListItem();
	}
	});

	// Make it occupy the first 2 columns
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.grabExcessHorizontalSpace = true;
	gd.horizontalSpan = numColumns - 1;
	gd.heightHint = getDefaultFontHeight(pathList, PROJECT_LIST_MULTIPLIER);
	pathList.setLayoutData(gd);
	pathList.setFont(parent.getFont());

	}

	/**
	* Get the defualt widget height for the supplied control.
	* @return int
	* @param control - the control being queried about fonts
	* @param lines - the number of lines to be shown on the table.
	*/
	private static int getDefaultFontHeight(Control control, int lines) {
	FontData[] viewerFontData = control.getFont().getFontData();
	int fontHeight = 10;

	//If we have no font data use our guess
	if (viewerFontData.length > 0)
	fontHeight = viewerFontData[0].getHeight();
	return lines * fontHeight;
	}

	private void createSymbolListButtons(Composite parent) {
	// Create a composite for the buttons
	symbolButtonComp = ControlFactory.createComposite(parent, 1);
	symbolButtonComp.setFont(parent.getFont());

	// Add the buttons
	addSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(NEW));
	addSymbol.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleAddSymbol();
	}
	});
	addSymbol.setEnabled(true);
	addSymbol.setFont(parent.getFont());
	addSymbol.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(addSymbol);

	editSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(EDIT));
	editSymbol.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	editSymbolListItem();
	}
	});
	editSymbol.setEnabled(true);
	editSymbol.setFont(parent.getFont());
	editSymbol.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(editSymbol);

	removeSymbol = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(REMOVE));
	removeSymbol.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleRemoveSymbol();
	}
	});
	removeSymbol.setFont(parent.getFont());
	removeSymbol.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(removeSymbol);

	symbolUp = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(UP));
	symbolUp.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleSymbolUp();
	}
	});
	symbolUp.setFont(parent.getFont());
	symbolUp.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(symbolUp);

	symbolDown = ControlFactory.createPushButton(symbolButtonComp, MakeUIPlugin.getResourceString(DOWN));
	symbolDown.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleSymbolDown();
	}
	});
	symbolDown.setFont(parent.getFont());
	symbolDown.setLayoutData(new GridData());
	SWTUtil.setButtonDimensionHint(symbolDown);
	}

	private void createSymbolListControl(Composite parent, int numColumns) {
	// Create the list
	symbolList = new List(parent, SWT.BORDER \| SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL);
	symbolList.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	enableSymbolButtons();
	}
	});
	symbolList.addMouseListener(new MouseAdapter() {
	public void mouseDoubleClick(MouseEvent e) {
	editSymbolListItem();
	}
	});

	// Make it occupy the first n-1 columns
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.horizontalSpan = numColumns - 1;
	gd.grabExcessHorizontalSpace = true;
	gd.heightHint = getDefaultFontHeight(pathList, PROJECT_LIST_MULTIPLIER);
	symbolList.setLayoutData(gd);
	symbolList.setFont(parent.getFont());

	}

	/* (non-Javadoc)
	* @see org.eclipse.cdt.ui.wizards.IWizardTab#doRun(org.eclipse.core.resources.IProject, org.eclipse.core.runtime.IProgressMonitor)
	*/
	public void performApply(IProgressMonitor monitor) throws CoreException {
	if (monitor == null) {
	monitor = new NullProgressMonitor();
	}
	if (getContainer().getProject() != null) {
	// Store the paths and symbols
	monitor.beginTask("Setting Scanner Info", 3);
	MakeScannerInfo info = MakeScannerProvider.getDefault().getMakeScannerInfo(getContainer().getProject(), false);
	info.setIncludePaths(getPathListContents());
	monitor.worked(1);
	info.setPreprocessorSymbols(getSymbolListContents());
	monitor.worked(1);
	info.update();
	monitor.done();
	} else {
	setIncludes(MakeCorePlugin.getDefault().getPluginPreferences());
	setSymbols(MakeCorePlugin.getDefault().getPluginPreferences());
	}
	}

	public void performDefaults() {
	pathList.removeAll();
	symbolList.removeAll();
	if (getContainer().getProject() != null) {
	pathList.setItems(getIncludes(MakeCorePlugin.getDefault().getPluginPreferences()));
	symbolList.setItems(getSymbols(MakeCorePlugin.getDefault().getPluginPreferences()));
	}
	getContainer().updateContainer();
	}

	private void setSymbols(Preferences prefs) {
	prefs.setValue(PREF_SYMBOLS, stringArrayToString(getSymbolListContents()));
	}

	private void setIncludes(Preferences prefs) {
	prefs.setValue(PREF_INCLUDES, stringArrayToString(getPathListContents()));
	}

	private String stringArrayToString(String[] strings) {
	StringBuffer buf = new StringBuffer();
	for (int i = 0; i < strings.length; i++) {
	buf.append(strings[i]).append(';');
	}
	return buf.toString();
	}

	private String[] getSymbols(Preferences prefs) {
	String syms = prefs.getString(PREF_SYMBOLS);
	return parseStringToList(syms);
	}

	private String[] getIncludes(Preferences prefs) {
	String syms = prefs.getString(PREF_INCLUDES);
	return parseStringToList(syms);
	}

	private String[] parseStringToList(String syms) {
	if (syms != null && syms.length() > 0) {
	StringTokenizer tok = new StringTokenizer(syms, ";");
	ArrayList list = new ArrayList(tok.countTokens());
	while (tok.hasMoreElements()) {
	list.add(tok.nextToken());
	}
	return (String[]) list.toArray(new String[list.size()]);
	}
	return new String[0];
	}

	/*
	* Double-click handler to allow edit of path information
	*/
	protected void editPathListItem() {
	// Edit the selection index
	int index = pathList.getSelectionIndex();
	if (index != -1) {
	String selItem = pathList.getItem(index);
	if (selItem != null) {
	InputDialog dialog =
	new InputDialog(
	shell,
	MakeUIPlugin.getResourceString(EDIT_PATH_TITLE),
	MakeUIPlugin.getResourceString(PATH_LABEL),
	selItem,
	null);
	String newItem = null;
	if (dialog.open() == InputDialog.OK) {
	newItem = dialog.getValue();
	if (newItem != null && !newItem.equals(selItem)) {
	pathList.setItem(index, newItem);
	}
	}
	}
	}
	}

	/*
	* Double-click handler to allow edit of symbol information
	*/
	protected void editSymbolListItem() {
	// Edit the selection index
	int index = symbolList.getSelectionIndex();
	if (index != -1) {
	String selItem = symbolList.getItem(index);
	if (selItem != null) {
	InputDialog dialog =
	new InputDialog(
	shell,
	MakeUIPlugin.getResourceString(EDIT_SYMBOL_TITLE),
	MakeUIPlugin.getResourceString(SYMBOL_LABEL),
	selItem,
	null);
	String newItem = null;
	if (dialog.open() == InputDialog.OK) {
	newItem = dialog.getValue();
	if (newItem != null && !newItem.equals(selItem)) {
	symbolList.setItem(index, newItem);
	}
	}
	}
	}
	}

	/*
	* Enables the buttons on the path control if the right conditions are met
	*/
	void enablePathButtons() {
	// Enable the remove button if there is at least 1 item in the list
	int items = pathList.getItemCount();
	if (items > 0) {
	editPath.setEnabled(true);
	removePath.setEnabled(true);
	// Enable the up/down buttons depending on what item is selected
	int index = pathList.getSelectionIndex();
	pathUp.setEnabled(items > 1 && index > 0);
	pathDown.setEnabled(items > 1 && index < (items - 1));
	} else {
	editPath.setEnabled(false);
	removePath.setEnabled(false);
	pathUp.setEnabled(false);
	pathDown.setEnabled(false);
	}
	}

	void enableSymbolButtons() {
	// Enable the remove button if there is at least 1 item in the list
	int items = symbolList.getItemCount();
	if (items > 0) {
	editSymbol.setEnabled(true);
	removeSymbol.setEnabled(true);
	// Enable the up/down buttons depending on what item is selected
	int index = symbolList.getSelectionIndex();
	symbolUp.setEnabled(items > 1 && index > 0);
	symbolDown.setEnabled(items > 1 && index < (items - 1));
	} else {
	editSymbol.setEnabled(false);
	removeSymbol.setEnabled(false);
	symbolUp.setEnabled(false);
	symbolDown.setEnabled(false);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.cdt.ui.wizards.IWizardTab#getControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite parent) {
	// Create the composite control for the tab
	int tabColumns = 3;
	Font font = parent.getFont();
	Composite composite = ControlFactory.createComposite(parent, tabColumns);
	composite.setFont(font);
	GridData gd;
	setControl(composite);

	WorkbenchHelp.setHelp(getControl(), IMakeHelpContextIds.MAKE_PATH_SYMBOL_SETTINGS);

	// Create a label for the include paths control
	Label paths = ControlFactory.createLabel(composite, MakeUIPlugin.getResourceString(PATHS));
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = tabColumns;
	paths.setLayoutData(gd);
	paths.setFont(font);

	//Create the list and button controls
	createPathListControl(composite, tabColumns);
	createPathListButtons(composite);
	enablePathButtons();

	// Create a label for the symbols control
	Label symbols = ControlFactory.createLabel(composite, MakeUIPlugin.getResourceString(SYMBOLS));
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = tabColumns;
	symbols.setLayoutData(gd);
	symbols.setFont(font);

	// Create list and button controls for symbols
	createSymbolListControl(composite, tabColumns);
	createSymbolListButtons(composite);
	enableSymbolButtons();

	setListContents();
	pathList.select(0);
	enablePathButtons();
	symbolList.select(0);
	enableSymbolButtons();
	}

	private String[] getPathListContents() {
	return pathList.getItems();
	}

	private String[] getSymbolListContents() {
	return symbolList.getItems();
	}

	protected void handleAddPath() {
	// Popup an entry dialog
	InputDialog dialog = new InputDialog(shell, MakeUIPlugin.getResourceString(PATH_TITLE), MakeUIPlugin.getResourceString(PATH_LABEL), "", null); //$NON-NLS-1$
	String path = null;
	if (dialog.open() == InputDialog.OK) {
	path = dialog.getValue();
	}
	if (path != null && path.length() > 0) {
	pathList.add(path);
	pathList.select(pathList.getItemCount() - 1);
	enablePathButtons();
	}
	}

	protected void handleAddSymbol() {
	// Popup an entry dialog
	InputDialog dialog = new InputDialog(shell, MakeUIPlugin.getResourceString(SYMBOL_TITLE), MakeUIPlugin.getResourceString(SYMBOL_LABEL), "", null); //$NON-NLS-1$
	String symbol = null;
	if (dialog.open() == InputDialog.OK) {
	symbol = dialog.getValue();
	}
	if (symbol != null && symbol.length() > 0) {
	symbolList.add(symbol);
	symbolList.select(symbolList.getItemCount() - 1);
	enableSymbolButtons();
	}
	}

	protected void handlePathDown() {
	// Get the selection index
	int index = pathList.getSelectionIndex();
	int items = pathList.getItemCount();
	if (index == -1 \|\| index == items - 1) {
	return;
	}
	// Swap the items in the list
	String selItem = pathList.getItem(index);
	pathList.remove(index);
	if (index + 1 == items) {
	pathList.add(selItem);
	} else {
	pathList.add(selItem, ++index);
	}

	// Keep the swapped item selected
	pathList.select(index);
	enablePathButtons();
	}

	protected void handlePathUp() {
	// Get the selection index
	int index = pathList.getSelectionIndex();
	if (index == -1 \|\| index == 0) {
	return;
	}
	// Swap the items in the list
	String selItem = pathList.getItem(index);
	pathList.remove(index);
	pathList.add(selItem, --index);

	// Keep the index selected
	pathList.select(index);
	enablePathButtons();
	}

	protected void handleRemovePath() {
	// Get the selection index
	int index = pathList.getSelectionIndex();
	if (index == -1) {
	return;
	}

	// Remove the element at that index
	pathList.remove(index);
	index = index - 1 < 0 ? 0 : index - 1;
	pathList.select(index);

	// Check if the buttons should still be enabled
	enablePathButtons();
	}

	protected void handleRemoveSymbol() {
	// Get the selection index
	int index = symbolList.getSelectionIndex();
	if (index == -1) {
	return;
	}
	// Remove the item at that index
	symbolList.remove(index);
	index = index - 1 < 0 ? 0 : index - 1;
	symbolList.select(index);
	// Check if the button state should be toggled
	enableSymbolButtons();
	}

	protected void handleSymbolDown() {
	// Get the selection index
	int index = symbolList.getSelectionIndex();
	int items = symbolList.getItemCount();
	if (index == -1 \|\| index == items - 1) {
	return;
	}
	// Swap the items in the list
	String selItem = symbolList.getItem(index);
	symbolList.remove(index);
	if (index + 1 == items) {
	symbolList.add(selItem);
	} else {
	symbolList.add(selItem, ++index);
	}

	// Keep the swapped item selected
	symbolList.select(index);
	enableSymbolButtons();
	}

	protected void handleSymbolUp() {
	// Get the selection index
	int index = symbolList.getSelectionIndex();
	if (index == -1 \|\| index == 0) {
	return;
	}
	// Swap the items in the list
	String selItem = symbolList.getItem(index);
	symbolList.remove(index);
	symbolList.add(selItem, --index);

	// Keep the index selected
	symbolList.select(index);
	enableSymbolButtons();
	}

	/* (non-Javadoc)
	* @see org.eclipse.cdt.ui.wizards.IWizardTab#isValid()
	*/
	public boolean isValid() {
	// Info on this page is not critical
	return true;
	}

	private void setListContents() {
	if (getContainer().getProject() != null) {
	MakeScannerInfo info;
	try {
	info = MakeScannerProvider.getDefault().getMakeScannerInfo(getContainer().getProject(), false);
	pathList.setItems(info.getIncludePaths());
	symbolList.setItems(info.getPreprocessorSymbols());
	} catch (CoreException e) {
	}
	} else {
	pathList.setItems(getIncludes(MakeCorePlugin.getDefault().getPluginPreferences()));
	symbolList.setItems(getSymbols(MakeCorePlugin.getDefault().getPluginPreferences()));
	}
	}
	}