| /******************************************************************************* |
| * Copyright (c) 2004, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.ui.actions; |
| |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.model.IVariable; |
| import org.eclipse.debug.ui.actions.IVariableValueEditor; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.debug.core.IJavaModifiers; |
| import org.eclipse.jdt.debug.core.IJavaVariable; |
| import org.eclipse.jdt.internal.debug.ui.DebugUIMessages; |
| import org.eclipse.jdt.internal.debug.ui.IJDIPreferencesConstants; |
| import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin; |
| import org.eclipse.jdt.internal.debug.ui.JDIModelPresentation; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.dialogs.MessageDialogWithToggle; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * Variable editor that prompts the user to edit Java variables |
| */ |
| public class JavaVariableValueEditor implements IVariableValueEditor { |
| |
| @Override |
| public boolean editVariable(IVariable variable, Shell shell) { |
| String signature= null; |
| try { |
| signature= getSignature(variable); |
| } catch (DebugException e) { |
| JDIDebugUIPlugin.errorDialog(shell, ActionMessages.JavaVariableValueEditor_0, ActionMessages.JavaVariableValueEditor_1, e); // |
| } |
| if (signature == null) { |
| return false; |
| } |
| if (!isAllowedToModifyValue(variable)) { |
| // return true to avoid further processing |
| return true; |
| } |
| IVariableValueEditor editor; |
| if (JDIModelPresentation.isObjectValue(signature)) { |
| editor= new JavaObjectValueEditor(); |
| } else { |
| // Primitive variable |
| editor= new JavaPrimitiveValueEditor(signature); |
| } |
| return editor.editVariable(variable, shell); |
| } |
| |
| @Override |
| public boolean saveVariable(IVariable variable, String expression, Shell shell) { |
| if (!isAllowedToModifyValue(variable)) { |
| // return true to avoid further processing |
| return true; |
| } |
| |
| // set the value of chars directly if expression is a single character (not an expression to evaluate) |
| if (expression.length() == 1 && variable instanceof IJavaVariable){ |
| IJavaVariable javaVariable = (IJavaVariable)variable; |
| try { |
| if (javaVariable.getJavaType() != null && javaVariable.getJavaType().getSignature() == Signature.SIG_CHAR){ |
| javaVariable.setValue(expression); |
| return true; |
| } |
| } catch (DebugException e) { |
| JDIDebugUIPlugin.statusDialog(e.getStatus()); |
| } |
| } |
| |
| // support expressions for primitives as well as literals |
| IVariableValueEditor editor= new JavaObjectValueEditor(); |
| return editor.saveVariable(variable, expression, shell); |
| } |
| |
| /** |
| * @return {@code false} to prohibit editing a variable |
| */ |
| protected boolean isAllowedToModifyValue(IVariable variable) { |
| if (variable instanceof IJavaModifiers) { |
| IJavaModifiers modifiers = (IJavaModifiers) variable; |
| boolean allowed = isAllowedToModifyFinalValue(modifiers); |
| if (!allowed) { |
| // prohibit editing a variable that is declared as final |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| protected boolean isAllowedToModifyFinalValue(IJavaModifiers variable) { |
| IPreferenceStore preferenceStore = JDIDebugUIPlugin.getDefault().getPreferenceStore(); |
| String key = IJDIPreferencesConstants.PREF_PROMPT_BEFORE_MODIFYING_FINAL_FIELDS; |
| if (!preferenceStore.getBoolean(key)) { |
| return true; |
| } |
| try { |
| if (!variable.isFinal()) { |
| return true; |
| } |
| } catch (DebugException e) { |
| JDIDebugUIPlugin.log(e); |
| } |
| return promptIfAllowedToModifyFinalValue(preferenceStore, key); |
| } |
| |
| protected boolean promptIfAllowedToModifyFinalValue(IPreferenceStore preferenceStore, String key) { |
| boolean dontShowAgain = false; |
| final MessageDialogWithToggle dialog = MessageDialogWithToggle.openYesNoQuestion( |
| JDIDebugUIPlugin.getActiveWorkbenchShell(), |
| DebugUIMessages.JavaVariableValueEditor_prompt_before_final_value_change_title, |
| DebugUIMessages.JavaVariableValueEditor_prompt_before_final_value_change_message, |
| DebugUIMessages.JavaVariableValueEditor_prompt_before_final_value_change_toggle_message, |
| dontShowAgain, |
| preferenceStore, |
| key); |
| return dialog.getReturnCode() == IDialogConstants.YES_ID; |
| } |
| |
| public static String getSignature(IVariable variable) throws DebugException { |
| String signature= null; |
| IJavaVariable javaVariable = variable.getAdapter(IJavaVariable.class); |
| if (javaVariable != null) { |
| signature = javaVariable.getSignature(); |
| } |
| return signature; |
| } |
| |
| } |