Bug 180256 - Launch configurations should support build variables

9 files changed, 104 insertions, 79 deletions

diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate.java
index 5df21eb9b06..ca52c713c25 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2011 QNX Software Systems and others.
+ * Copyright (c) 2005, 2012 QNX Software Systems 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
@@ -60,6 +60,7 @@ import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.SubProgressMonitor;
 import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.ILaunchConfiguration;
@@ -645,6 +646,7 @@ abstract public class AbstractCLaunchDelegate extends LaunchConfigurationDelegat
 
 			if (configuration.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROJECT_BUILD_CONFIG_AUTO, false)) {
 				String programPath = configuration.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, EMPTY_STR);
+				programPath = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(programPath);
 				ICConfigurationDescription buildConfig = LaunchUtils.getBuildConfigByProgramPath(buildProject, programPath);
 				if (buildConfig != null)
 					buildConfigID = buildConfig.getId();
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate2.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate2.java
index ba922b69a58..d9f4615b490 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate2.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/AbstractCLaunchDelegate2.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2010, 2011 Nokia and others.
+ * Copyright (c) 2010, 2012 Nokia 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
@@ -43,6 +43,7 @@ import org.eclipse.core.runtime.MultiStatus;
 import org.eclipse.core.runtime.OperationCanceledException;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.SubMonitor;
+import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.ILaunchConfiguration;
@@ -253,6 +254,7 @@ public abstract class AbstractCLaunchDelegate2 extends LaunchConfigurationDelega
 			// If automatic configuration detection then discover the build config corresponding to the executable
 			if (configuration.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROJECT_BUILD_CONFIG_AUTO, false)) {
 				String programPath = configuration.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, ""); //$NON-NLS-1$
+				programPath = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(programPath);
 				ICConfigurationDescription buildConfig = LaunchUtils.getBuildConfigByProgramPath(project, programPath);
 				if (buildConfig != null)
 					buildConfigID = buildConfig.getId();
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.java
index cc9e0b974e3..1652d80a8a7 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2009 QNX Software Systems and others.
+ * Copyright (c) 2004, 2012 QNX Software Systems 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
@@ -75,6 +75,7 @@ public class LaunchMessages extends NLS {
 	public static String CMainTab_ProjectColon;
 	public static String CMainTab_C_Application;
 	public static String CMainTab_CoreFile_path;
+	public static String CMainTab_Variables;
 	public static String CMainTab_Search;
 	public static String CMainTab_Choose_program_to_run;
 	public static String CMainTab_Choose_program_to_run_from_NAME;
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
index c11f42f7238..a6efff76eea 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
@@ -1,17 +1,17 @@
 ###############################################################################
-# Copyright (c) 2002, 2010 QNX Software Systems and others.
+# Copyright (c) 2002, 2012 QNX Software Systems 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:
-#       QNX Software Systems - Initial API and implementation
+#     QNX Software Systems - Initial API and implementation
 # 		Monta Vista - Joanne Woo - Bug 87556
-#       Nokia - Ken Ryall - Bug 118894
-#       Carlos O'Donnel (CodeSourcery) - Bug 218366
-#		IBM Corporation
-#		Sergey Prigogin (Google)
+#     Nokia - Ken Ryall - Bug 118894
+#     Carlos O'Donnel (CodeSourcery) - Bug 218366
+#		  IBM Corporation
+#		  Sergey Prigogin (Google)
 ###############################################################################
 
 AbstractCLaunchDelegate_Debugger_not_installed=CDT Debugger not installed
@@ -81,6 +81,7 @@ CMainTab_Main=Main
 CMainTab_ProjectColon=&Project:
 CMainTab_C_Application=C/C++ Application:
 CMainTab_CoreFile_path=Core file (leave blank to trigger prompt):
+CMainTab_Variables=&Variables...
 CMainTab_Search=Searc&h Project...
 CMainTab_Choose_program_to_run=Choose a &program to run:
 CMainTab_Choose_program_to_run_from_NAME=Choose a program to run from {0}:
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/WorkingDirectoryBlock.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/WorkingDirectoryBlock.java
index 0c7072e042c..cd51893b3b8 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/WorkingDirectoryBlock.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/WorkingDirectoryBlock.java
@@ -1,12 +1,12 @@
 /*******************************************************************************
- *  Copyright (c) 2000, 2009 IBM Corporation and others.
+ *  Copyright (c) 2000, 2012 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 Corporation - initial API and implementation
+ *      IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.cdt.launch.internal.ui;
 
@@ -26,7 +26,6 @@ import org.eclipse.core.variables.IStringVariableManager;
 import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
-import org.eclipse.debug.ui.StringVariableSelectionDialog;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.accessibility.AccessibleAdapter;
 import org.eclipse.swt.accessibility.AccessibleEvent;
@@ -83,8 +82,6 @@ public class WorkingDirectoryBlock extends CLaunchConfigurationTab {
 				handleWorkingDirBrowseButtonSelected();
 			} else if (source == fUseDefaultWorkingDirButton) {
 				handleUseDefaultWorkingDirButtonSelected();
-			} else if (source == fVariablesButton) {
-				handleWorkingDirVariablesButtonSelected();
 			}
 		}
 	}
@@ -148,8 +145,7 @@ public class WorkingDirectoryBlock extends CLaunchConfigurationTab {
 		fFileSystemButton = createPushButton(buttonComp, LaunchMessages.WorkingDirectoryBlock_1, null); 
 		fFileSystemButton.addSelectionListener(fListener);
 
-		fVariablesButton = createPushButton(buttonComp, LaunchMessages.WorkingDirectoryBlock_17, null); 
-		fVariablesButton.addSelectionListener(fListener);
+		fVariablesButton = createVariablesButton(buttonComp, LaunchMessages.WorkingDirectoryBlock_17, null); 
 	}
 
 	/*
@@ -234,19 +230,6 @@ public class WorkingDirectoryBlock extends CLaunchConfigurationTab {
 		fFileSystemButton.setEnabled(!def);
 	}
 
-	protected void handleWorkingDirVariablesButtonSelected() {
-		String variableText = getVariable();
-		if (variableText != null) {
-			fWorkingDirText.append(variableText);
-		}
-	}
-
-	private String getVariable() {
-		StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
-		dialog.open();
-		return dialog.getVariableExpression();
-	}
-
 	/**
 	 * Sets the default working directory
 	 */
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
index 9d54a8a9213..e34034b837c 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
@@ -1,13 +1,13 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2009 QNX Software Systems and others.
+ * Copyright (c) 2005, 2012 QNX Software Systems 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:
- * QNX Software Systems - Initial API and implementation
- * IBM Corporation
+ *     QNX Software Systems - Initial API and implementation
+ *     IBM Corporation
  *******************************************************************************/
 package org.eclipse.cdt.launch.ui;
 
@@ -20,15 +20,12 @@ import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.ui.ILaunchConfigurationDialog;
-import org.eclipse.debug.ui.StringVariableSelectionDialog;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.accessibility.AccessibleAdapter;
 import org.eclipse.swt.accessibility.AccessibleEvent;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
-import org.eclipse.swt.events.SelectionAdapter;
-import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
@@ -120,43 +117,12 @@ public class CArgumentsTab extends CLaunchConfigurationTab {
 				updateLaunchConfigurationDialog();
 			}
 		});
-		fArgumentVariablesButton= createPushButton(group, LaunchMessages.CArgumentsTab_Variables, null); 
+		fArgumentVariablesButton= createVariablesButton(group, LaunchMessages.CArgumentsTab_Variables, fPrgmArgumentsText); 
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		fArgumentVariablesButton.setLayoutData(gd);
-		fArgumentVariablesButton.addSelectionListener(new SelectionAdapter() {
-			/* (non-Javadoc)
-			 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
-			 */
-			@Override
-			public void widgetSelected(SelectionEvent arg0) {
-				handleVariablesButtonSelected(fPrgmArgumentsText);
-			}
-		});
 		addControlAccessibleListener(fArgumentVariablesButton, fArgumentVariablesButton.getText()); // need to strip the mnemonic from buttons
 	}
 
-	/**
-	 * A variable entry button has been pressed for the given text
-	 * field. Prompt the user for a variable and enter the result
-	 * in the given field.
-	 */
-	protected void handleVariablesButtonSelected(Text textField) {
-		String variable = getVariable();
-		if (variable != null) {
-			textField.append(variable);
-		}
-	}
-
-	/**
-	 * Prompts the user to choose and configure a variable and returns
-	 * the resulting string, suitable to be used as an attribute.
-	 */
-	private String getVariable() {
-		StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
-		dialog.open();
-		return dialog.getVariableExpression();
-	}
-
 	public void addControlAccessibleListener(Control control, String controlName) {
 		//strip mnemonic (&)
 		String[] strs = controlName.split("&"); //$NON-NLS-1$
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CDebuggerTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CDebuggerTab.java
index 62390e06418..c10fdf98598 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CDebuggerTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CDebuggerTab.java
@@ -1,14 +1,14 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2009 QNX Software Systems and others.
+ * Copyright (c) 2005, 2012 QNX Software Systems 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:
- * QNX Software Systems - Initial API and implementation
- * Ken Ryall (Nokia) - https://bugs.eclipse.org/bugs/show_bug.cgi?id=118894
- * IBM Corporation
+ *     QNX Software Systems - Initial API and implementation
+ *     Ken Ryall (Nokia) - https://bugs.eclipse.org/bugs/show_bug.cgi?id=118894
+ *     IBM Corporation
  *******************************************************************************/
 package org.eclipse.cdt.launch.ui;
 
@@ -35,6 +35,7 @@ import org.eclipse.cdt.launch.internal.ui.LaunchUIPlugin;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.jface.dialogs.Dialog;
@@ -375,6 +376,9 @@ public class CDebuggerTab extends AbstractCDebuggerTab {
 		try {
 			projectName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROJECT_NAME, (String)null);
 			programName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, (String)null);
+			if (programName != null) {
+				programName = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(programName);
+			}
 		} catch (CoreException e) {
 		}
 		if (programName != null) {
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CLaunchConfigurationTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CLaunchConfigurationTab.java
index 8e255761c94..27280d70d51 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CLaunchConfigurationTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CLaunchConfigurationTab.java
@@ -1,13 +1,14 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2009 QNX Software Systems and others.
+ * Copyright (c) 2005, 2012 QNX Software Systems 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:
- * QNX Software Systems - Initial API and implementation
- * Ken Ryall (Nokia) - bug 178731
+ *     QNX Software Systems - Initial API and implementation
+ *     Ken Ryall (Nokia) - bug 178731
+ *     Anton Gorenkov
  *******************************************************************************/
 package org.eclipse.cdt.launch.ui;
 
@@ -26,11 +27,18 @@ import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
+import org.eclipse.debug.ui.StringVariableSelectionDialog;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IEditorInput;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IFileEditorInput;
@@ -54,6 +62,9 @@ public abstract class CLaunchConfigurationTab extends AbstractLaunchConfiguratio
 		try {
 			projectName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROJECT_NAME, (String)null);
 			programName = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, (String)null);
+			if (programName != null) {
+				programName = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(programName);
+			}
 		} catch (CoreException e) {
 		}
 		if (projectName != null && !projectName.equals("")) { //$NON-NLS-1$
@@ -160,4 +171,44 @@ public abstract class CLaunchConfigurationTab extends AbstractLaunchConfiguratio
 			return platform;
 		}
 	}
+	
+	/**
+	 * Creates a button that allows user to insert build variables.
+	 * 
+	 * @since 7.0
+	 */
+	protected Button createVariablesButton(Composite parent, String label, final Text textField) {
+		Button variablesButton = createPushButton(parent, label, null); 
+		variablesButton.addSelectionListener(new SelectionAdapter() {
+			@Override
+			public void widgetSelected(SelectionEvent arg0) {
+				handleVariablesButtonSelected(textField);
+			}
+		});
+		return variablesButton;
+	}
+
+	/**
+	 * A variable entry button has been pressed for the given text
+	 * field. Prompt the user for a variable and enter the result
+	 * in the given field.
+	 */
+	private void handleVariablesButtonSelected(Text textField) {
+		String variable = getVariable();
+		if (variable != null) {
+			// We should use insert() but not append() to be consistent with the Platform behavior (e.g. Common tab)
+			textField.insert(variable);
+		}
+	}
+
+	/**
+	 * Prompts the user to choose and configure a variable and returns
+	 * the resulting string, suitable to be used as an attribute.
+	 */
+	private String getVariable() {
+		StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
+		dialog.open();
+		return dialog.getVariableExpression();
+	}
+	
 }
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CMainTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CMainTab.java
index 14df978f8fc..24c5a96682a 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CMainTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CMainTab.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2010 QNX Software Systems and others.
+ * Copyright (c) 2005, 2012 QNX Software Systems 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
@@ -10,6 +10,7 @@
  *     Ken Ryall (Nokia) - bug 178731
  *	   IBM Corporation
  *	   Sergey Prigogin (Google)
+ *     Anton Gorenkov
  *******************************************************************************/
 package org.eclipse.cdt.launch.ui;
 
@@ -31,6 +32,7 @@ import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
+import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.ui.DebugUITools;
@@ -343,7 +345,6 @@ public class CMainTab extends CAbstractMainTab {
 	protected void createExeFileGroup(Composite parent, int colSpan) {
 		Composite mainComp = new Composite(parent, SWT.NONE);
 		GridLayout mainLayout = new GridLayout();
-		mainLayout.numColumns = 3;
 		mainLayout.marginHeight = 0;
 		mainLayout.marginWidth = 0;
 		mainComp.setLayout(mainLayout);
@@ -353,7 +354,6 @@ public class CMainTab extends CAbstractMainTab {
 		fProgLabel = new Label(mainComp, SWT.NONE);
 		fProgLabel.setText(LaunchMessages.CMainTab_C_Application); 
 		gd = new GridData();
-		gd.horizontalSpan = 3;
 		fProgLabel.setLayoutData(gd);
 		fProgText = new Text(mainComp, SWT.SINGLE | SWT.BORDER);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
@@ -365,7 +365,17 @@ public class CMainTab extends CAbstractMainTab {
 			}
 		});
 
-		fSearchButton = createPushButton(mainComp, LaunchMessages.CMainTab_Search, null); 
+		Composite buttonComp = new Composite(mainComp, SWT.NONE);
+		GridLayout layout = new GridLayout(3, false);
+		layout.marginHeight = 0;
+		layout.marginWidth = 0;
+		buttonComp.setLayout(layout);
+		gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
+		buttonComp.setLayoutData(gd);
+		buttonComp.setFont(parent.getFont());
+
+		createVariablesButton(buttonComp, LaunchMessages.CMainTab_Variables, fProgText);
+		fSearchButton = createPushButton(buttonComp, LaunchMessages.CMainTab_Search, null); 
 		fSearchButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent evt) {
@@ -375,7 +385,7 @@ public class CMainTab extends CAbstractMainTab {
 		});
 
 		Button fBrowseForBinaryButton;
-		fBrowseForBinaryButton = createPushButton(mainComp, LaunchMessages.Launch_common_Browse_2, null); 
+		fBrowseForBinaryButton = createPushButton(buttonComp, LaunchMessages.Launch_common_Browse_2, null); 
 		fBrowseForBinaryButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent evt) {
@@ -432,6 +442,11 @@ public class CMainTab extends CAbstractMainTab {
 			}
 	
 			name = fProgText.getText().trim();
+       		try {
+       			name = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(name);
+			} catch (CoreException e) {
+				// Silently ignore substitution failure (for consistency with "Arguments" and "Work directory" fields)
+			}
 			if (name.length() == 0) {
 				setErrorMessage(LaunchMessages.CMainTab_Program_not_specified); 
 				return false;