1 files changed, 103 insertions, 0 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/launchVariables/PromptExpanderBase.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/launchVariables/PromptExpanderBase.java
new file mode 100644
index 000000000..0e4a4fba9
--- /dev/null
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/launchVariables/PromptExpanderBase.java
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 Matt Conway and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     Matt Conway - initial implementation
+ *     IBM Corporation - integration and code cleanup
+ *******************************************************************************/
+package org.eclipse.debug.ui.launchVariables;
+
+import java.text.MessageFormat;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.debug.internal.ui.DebugUIPlugin;
+import org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsMessages;
+
+/**
+ * Base implementation for variable expanders that prompt the user
+ * for their value.
+ */
+abstract class PromptExpanderBase extends DefaultVariableExpander {
+
+	/**
+	 * A hint that helps the user choose their input. If a prompt
+	 * hint is provider the user will be prompted:
+	 * 	Please input a value for <code>promptHint</code>
+	 */
+	protected String promptHint = null;
+	/**
+	 * The prompt displayed to the user.
+	 */
+	protected String dialogMessage = null;
+	/**
+	 * The default value selected when the prompt is displayed
+	 */
+	protected String defaultValue = null;
+	/**
+	 * The last value chosen by the user for this variable 
+	 */
+	protected String lastValue = null;
+	/**
+	 * The result returned from the prompt dialog
+	 */
+	protected String dialogResultString = null;
+	
+	/**
+	 * Prompts the user for input and returns a string representation of
+	 * the user's selection.
+	 */
+	public String getText(String varTag, String varValue, ExpandVariableContext context) throws CoreException {
+		String varText = null;
+		setupDialog(varValue);
+
+		DebugUIPlugin.getStandardDisplay().syncExec(new Runnable() {
+			public void run() {
+				prompt();
+			}
+		});
+		if (dialogResultString != null) {
+			varText = dialogResultString;
+			lastValue = dialogResultString;
+		}
+		return varText;
+	}
+	
+	/**
+	 * Presents the user with the appropriate prompt for the variable to be expanded
+	 * and sets the <code>dialogResultString</code> based on the user's selection.
+	 */
+	public abstract void prompt();
+
+	/**
+	 * Initializes values displayed when the user is prompted. If
+	 * a prompt hint and default value are supplied in the given
+	 * variable value, these are extracted for presentation
+	 * 
+	 * @param varValue the value of the variable from which the prompt
+	 * hint and default value will be extracted
+	 */
+	protected void setupDialog(String varValue) {
+		promptHint = null;
+		defaultValue = null;
+		dialogResultString = null;
+		if (varValue != null) {
+			int idx = varValue.indexOf(':');
+			if (idx != -1) {
+				promptHint = varValue.substring(0, idx);
+				defaultValue = varValue.substring(idx + 1);
+			} else {
+				promptHint = varValue;
+			}
+		}
+
+		if (promptHint != null) {
+			dialogMessage = MessageFormat.format(LaunchConfigurationsMessages.getString("PromptExpanderBase.Please_input_a_value_for_{0}_1"), new String[] {promptHint}); //$NON-NLS-1$
+		} else {
+			dialogMessage = LaunchConfigurationsMessages.getString("PromptExpanderBase.Please_input_a_value_2"); //$NON-NLS-1$
+		}
+	}
+}