| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.xdebugger.frame; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Represents a value in debugger tree. |
| * Override {@link XValueContainer#computeChildren} if value has a properties which should be shown as child nodes |
| * |
| * @author nik |
| */ |
| public abstract class XValue extends XValueContainer { |
| /** |
| * Start computing presentation of the value in the debugger tree and call {@link XValueNode#setPresentation(javax.swing.Icon, String, String, boolean)} |
| * when computation is finished. |
| * Note that this method is called from the Event Dispatch thread so it should return quickly. |
| * @param node node |
| * @param place where the node will be shown. |
| */ |
| public abstract void computePresentation(@NotNull XValueNode node, @NotNull XValuePlace place); |
| |
| /** |
| * @return expression which evaluates to the current value |
| */ |
| @Nullable |
| public String getEvaluationExpression() { |
| return null; |
| } |
| |
| /** |
| * @return {@link com.intellij.xdebugger.frame.XValueModifier} instance which can be used to modify the value |
| */ |
| @Nullable |
| public XValueModifier getModifier() { |
| return null; |
| } |
| |
| /** |
| * Start computing source position of the value and call {@link XNavigatable#setSourcePosition(com.intellij.xdebugger.XSourcePosition)} |
| * when computation is finished. |
| * Note that this method is called from the Event Dispatch thread so it should return quickly. |
| * @param navigatable navigatable |
| */ |
| public void computeSourcePosition(@NotNull XNavigatable navigatable) { |
| navigatable.setSourcePosition(null); |
| } |
| |
| /** |
| * Return {@code true} from this method and override {@link #computeSourcePosition(XNavigatable)} if navigation to the source |
| * is supported for the value |
| * @return {@code true} if navigation to the value's source is supported |
| */ |
| public boolean canNavigateToSource() { |
| // should be false, but cannot be due to compatibility reasons |
| return true; |
| } |
| |
| /** |
| * Return {@code true} from this method and override {@link #computeTypeSourcePosition(XNavigatable)} if navigation to the value's type |
| * is supported for the value |
| * @return {@code true} if navigation to the value's type is supported |
| */ |
| public boolean canNavigateToTypeSource() { |
| return false; |
| } |
| |
| /** |
| * Start computing source position of the value's type and call {@link XNavigatable#setSourcePosition(com.intellij.xdebugger.XSourcePosition)} |
| * when computation is finished. |
| * Note that this method is called from the Event Dispatch thread so it should return quickly. |
| */ |
| public void computeTypeSourcePosition(@NotNull XNavigatable navigatable) { |
| navigatable.setSourcePosition(null); |
| } |
| |
| /** |
| * This enables showing referrers for the value |
| * |
| * @return provider that creates an XValue returning objects that refer to the current value |
| * or null if showing referrers for the value is disabled |
| */ |
| @Nullable |
| public XReferrersProvider getReferrersProvider() { |
| return null; |
| } |
| } |