Use DiffManagerEx and Remove GitMerge view

build.gradle.kts

@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "com.devoxx.genie"
-version = "0.3.0"
+version = "0.3.1"
 
 repositories {
     mavenCentral()

src/main/java/com/devoxx/genie/service/MessageCreationService.java

@@ -64,7 +64,7 @@ public UserMessage createUserMessage(@NotNull ChatMessageContext chatMessageCont
         }
 
         // If git diff is enabled, add special instructions
-        if (DevoxxGenieStateService.getInstance().getUseDiffMerge()) {
+        if (DevoxxGenieStateService.getInstance().getUseSimpleDiff()) {
             stringBuilder.append("<DiffInstructions>").append(GIT_DIFF_INSTRUCTIONS).append("</DiffInstructions>\n\n");
         }
 
@@ -137,8 +137,7 @@ public UserMessage createUserMessage(@NotNull ChatMessageContext chatMessageCont
         StringBuilder stringBuilder = new StringBuilder();
 
         // If git diff is enabled, add special instructions at the beginning
-        if (DevoxxGenieStateService.getInstance().getUseDiffMerge() ||
-            DevoxxGenieStateService.getInstance().getUseSimpleDiff()) {
+        if (DevoxxGenieStateService.getInstance().getUseSimpleDiff()) {
             stringBuilder.append("<DiffInstructions>").append(GIT_DIFF_INSTRUCTIONS).append("</DiffInstructions>\n\n");
         }
 

src/main/java/com/devoxx/genie/service/gitdiff/GitMergeService.java

@@ -1,16 +1,11 @@
 package com.devoxx.genie.service.gitdiff;
 
-import com.devoxx.genie.ui.settings.DevoxxGenieStateService;
 import com.devoxx.genie.ui.util.NotificationUtil;
-import com.intellij.diff.DiffContentFactory;
-import com.intellij.diff.DiffManager;
-import com.intellij.diff.DiffManagerImpl;
+import com.intellij.diff.DiffManagerEx;
 import com.intellij.diff.contents.DiffContent;
-import com.intellij.diff.contents.DocumentContent;
 import com.intellij.diff.contents.DocumentContentImpl;
 import com.intellij.diff.requests.DiffRequest;
 import com.intellij.diff.requests.SimpleDiffRequest;
-import com.intellij.diff.requests.TextMergeRequestImpl;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.editor.Document;
@@ -30,48 +25,6 @@ public static GitMergeService getInstance() {
         return ApplicationManager.getApplication().getService(GitMergeService.class);
     }
 
-    /**
-     * Shows a three-way merge view with:
-     * - Left: Original code
-     * - Center: Merge result (initially empty)
-     * - Right: LLM's modified version
-     */
-    public void showMerge(@NotNull Project project,
-                          @NotNull String originalContent,
-                          @NotNull String modifiedContent,
-                          @NotNull String title,
-                          @NotNull Document targetDocument) {
-        DevoxxGenieStateService instance = DevoxxGenieStateService.getInstance();
-        if (!instance.getUseSimpleDiff() && !instance.getUseDiffMerge()) {
-            LOG.info("Diff view is disabled");
-            return;
-        }
-
-        ApplicationManager.getApplication().invokeLater(() -> {
-            DiffContentFactory factory = DiffContentFactory.getInstance();
-
-            // Create contents for three-way merge
-            DocumentContent originalContentDoc = factory.create(project, originalContent);
-
-            DocumentContent modifiedContent1 = factory.create(project, modifiedContent);
-            DocumentContent targetDocumentContent = factory.create(project, targetDocument);
-
-            Document originalDocument = originalContentDoc.getDocument();
-
-            TextMergeRequestImpl request = new TextMergeRequestImpl(
-                project,
-                targetDocumentContent,
-                originalDocument.getCharsSequence(),
-                List.of(originalContentDoc, modifiedContent1, targetDocumentContent),
-                title,
-                List.of("Original Code", "LLM Modified Code", "Merge Result")
-            );
-
-            // Show the merge dialog
-            DiffManager.getInstance().showMerge(project, request);
-        });
-    }
-
     /**
      * Git diff view
      * @param project the project
@@ -107,7 +60,7 @@ public void showDiffView(Project project, VirtualFile originalFile, String sugge
             );
 
             ApplicationManager.getApplication().invokeLater(() ->
-                DiffManagerImpl.getInstance().showDiff(project, diffRequest));
+                DiffManagerEx.getInstance().showDiff(project, diffRequest));
         });
     }
 }

src/main/java/com/devoxx/genie/ui/DevoxxGenieToolWindowContent.java

@@ -21,29 +21,20 @@
 import com.devoxx.genie.ui.settings.DevoxxGenieStateService;
 import com.devoxx.genie.ui.topic.AppTopics;
 import com.devoxx.genie.ui.util.NotificationUtil;
-import com.intellij.diff.DiffManagerImpl;
-import com.intellij.diff.contents.DiffContent;
-import com.intellij.diff.contents.FileContentImpl;
-import com.intellij.diff.requests.DiffRequest;
-import com.intellij.diff.requests.SimpleDiffRequest;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.ComboBox;
 import com.intellij.openapi.ui.Messages;
 import com.intellij.openapi.ui.Splitter;
 import com.intellij.openapi.util.Disposer;
-import com.intellij.openapi.util.NlsContexts;
-import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.wm.ToolWindow;
 import com.intellij.ui.OnePixelSplitter;
 import com.intellij.ui.components.JBScrollPane;
 import com.intellij.util.messages.MessageBusConnection;
 import lombok.Getter;
-import org.apache.xmlbeans.impl.xb.xsdschema.SimpleContentDocument;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import java.awt.*;

src/main/java/com/devoxx/genie/ui/panel/ChatResponsePanel.java

@@ -10,12 +10,6 @@
 import com.devoxx.genie.ui.processor.NodeProcessorFactory;
 import com.devoxx.genie.ui.settings.DevoxxGenieStateService;
 import com.devoxx.genie.util.DefaultLLMSettingsUtil;
-import com.intellij.openapi.application.ApplicationManager;
-import com.intellij.openapi.editor.Document;
-import com.intellij.openapi.editor.Editor;
-import com.intellij.openapi.fileEditor.FileDocumentManager;
-import com.intellij.openapi.fileEditor.FileEditorManager;
-import com.intellij.openapi.util.Computable;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.ui.JBColor;
 import com.knuddels.jtokkit.api.Encoding;
@@ -33,7 +27,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
-import java.util.Objects;
 
 import static com.devoxx.genie.ui.util.DevoxxGenieFontsUtil.SourceCodeProFontPlan14;
 
@@ -68,9 +61,7 @@ private void addResponsePane(@NotNull ChatMessageContext chatMessageContext) {
         DevoxxGenieStateService stateService = DevoxxGenieStateService.getInstance();
 
         // If git diff is enabled, try to extract code blocks and show diff
-        if (stateService.getUseDiffMerge()) {
-            processGitMerge(chatMessageContext, document);
-        } else if (stateService.getUseSimpleDiff()) {
+        if (stateService.getUseSimpleDiff()) {
             processGitDiff(chatMessageContext, document);
         }
 
@@ -88,65 +79,6 @@ private void addResponsePane(@NotNull ChatMessageContext chatMessageContext) {
         }
     }
 
-    private void processGitMerge(@NotNull ChatMessageContext chatMessageContext, @NotNull Node document) {
-        // Get original code from context
-        String originalCode;
-        EditorInfo editorInfo = chatMessageContext.getEditorInfo();
-
-        // Wrap the document access in a read action
-        originalCode = ApplicationManager
-            .getApplication()
-            .runReadAction((Computable<String>)  () -> {
-            if (editorInfo.getSelectedText() != null) {
-                return editorInfo.getSelectedText();
-            } else {
-                List<VirtualFile> selectedFiles = editorInfo.getSelectedFiles();
-                if (selectedFiles == null || selectedFiles.isEmpty()) {
-                    return null;
-                }
-                VirtualFile originalFile = selectedFiles.get(0);
-                Document originalDoc = FileDocumentManager.getInstance().getDocument(originalFile);
-                if (originalDoc == null) {
-                    return null;
-                }
-                return originalDoc.getText();
-            }
-        });
-
-        if (originalCode == null) {
-            return;
-        }
-
-
-        // Find the first code block in the response
-        Node node = document.getFirstChild();
-        while (node != null) {
-            if (node instanceof FencedCodeBlock codeBlock) {
-                String modifiedCode = codeBlock.getLiteral();
-
-                Document editorDocument = com.intellij.openapi.application.ApplicationManager.getApplication()
-                    .runReadAction((com.intellij.openapi.util.Computable<Document>) () ->
-                        Objects.requireNonNull(FileEditorManager.getInstance(chatMessageContext.getProject())
-                                .getSelectedTextEditor())
-                            .getDocument()
-                    );
-
-                // Show merge using our service
-                GitMergeService.getInstance().showMerge(
-                    chatMessageContext.getProject(),
-                    originalCode,
-                    modifiedCode,
-                    "Merge LLM Changes",
-                    editorDocument
-                );
-
-                // Only show diff for first code block
-                break;
-            }
-            node = node.getNext();
-        }
-    }
-
     private void addMetricExecutionInfo(@NotNull ChatMessageContext chatMessageContext) {
         JPanel metricExecutionInfoPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
         metricExecutionInfoPanel.setOpaque(false);
@@ -191,34 +123,7 @@ private void processGitDiff(@NotNull ChatMessageContext chatMessageContext, @Not
             return;
         }
 
-        // Handle single file case
-        if (editorInfo.getSelectedText() != null) {
-            Editor editor = FileEditorManager.getInstance(chatMessageContext.getProject())
-                .getSelectedTextEditor();
-
-            if (editor != null) {
-                String originalCode = editorInfo.getSelectedText();
-
-                // Find first code block in response
-                Node node = document.getFirstChild();
-                while (node != null) {
-                    if (node instanceof FencedCodeBlock codeBlock) {
-
-                        GitMergeService.getInstance().showMerge(
-                            chatMessageContext.getProject(),
-                            originalCode,
-                            codeBlock.getLiteral(),
-                            "Merge LLM Changes",
-                            editor.getDocument()
-                        );
-                        break;
-                    }
-                    node = node.getNext();
-                }
-            }
-        }
-        // Handle multiple files case
-        else if (editorInfo.getSelectedFiles() != null && !editorInfo.getSelectedFiles().isEmpty()) {
+        if (editorInfo.getSelectedFiles() != null && !editorInfo.getSelectedFiles().isEmpty()) {
             List<VirtualFile> files = editorInfo.getSelectedFiles();
             List<String> modifiedContents = new ArrayList<>();
 

src/main/java/com/devoxx/genie/ui/settings/DevoxxGenieStateService.java

@@ -43,7 +43,6 @@ public static DevoxxGenieStateService getInstance() {
     private Boolean showExecutionTime = true;
 
     // Git Diff features
-    private Boolean useDiffMerge = false;
     private Boolean useSimpleDiff = false;
 
     // Local LLM URL fields

src/main/java/com/devoxx/genie/ui/settings/gitmerge/GitDiffMode.java

@@ -2,39 +2,6 @@
 
 public enum GitDiffMode {
     DISABLED("Disabled", "", ""),
-    DIFF_MERGE("Git Diff Merge", "/images/diff_merge.jpg",
-        """
-        <html>
-        <head>
-            <style type="text/css">
-               body {
-                  font-family: 'Source Code Pro', monospace;
-                  zoom: %s;
-              }
-              h2 {
-                margin-bottom: 5px;
-              }
-              p {
-                margin: 0;
-              }
-              ul {
-                margin-bottom: 5px;
-              }
-              li {
-                margin-bottom: 5px;
-              }
-            </style>
-        </head>
-        <body>
-        <h3>Three-panel comparison</h2>
-        <p>Shows three-way comparison between original, suggested, and merged changes</p>
-        <UL>
-            <LI>Left panel: Original file labeled "Original code"</LI>
-            <LI>Center panel: Merge result labeled "Merged"</LI>
-            <LI>Right panel: LLM's modified version labeled "LLM suggested"</LI>
-        </UL>
-        </body></html>
-    """),
     SIMPLE_DIFF("Simple Git Diff", "/images/simple_diff.jpg",
         """
         <html>

src/main/java/com/devoxx/genie/ui/settings/gitmerge/GitMergeSettingsComponent.java

@@ -52,9 +52,7 @@ public Component getListCellRendererComponent(JList<?> list, Object value,
     }
 
     private GitDiffMode determineCurrentMode() {
-        if (stateService.getUseDiffMerge()) {
-            return GitDiffMode.DIFF_MERGE;
-        } else if (stateService.getUseSimpleDiff()) {
+        if (stateService.getUseSimpleDiff()) {
             return GitDiffMode.SIMPLE_DIFF;
         }
         return GitDiffMode.DISABLED;

src/main/java/com/devoxx/genie/ui/settings/gitmerge/GitMergeSettingsConfigurable.java

@@ -49,7 +49,6 @@ public void apply() {
         DevoxxGenieStateService stateService = DevoxxGenieStateService.getInstance();
         GitDiffMode selectedMode = (GitDiffMode) diffSettingsComponent.getGitDiffModeComboBox().getSelectedItem();
 
-        stateService.setUseDiffMerge(selectedMode == GitDiffMode.DIFF_MERGE);
         stateService.setUseSimpleDiff(selectedMode == GitDiffMode.SIMPLE_DIFF);
     }
 
@@ -61,9 +60,7 @@ public void reset() {
     }
 
     private GitDiffMode determineCurrentMode(@NotNull DevoxxGenieStateService stateService) {
-        if (stateService.getUseDiffMerge()) {
-            return GitDiffMode.DIFF_MERGE;
-        } else if (stateService.getUseSimpleDiff()) {
+        if (stateService.getUseSimpleDiff()) {
             return GitDiffMode.SIMPLE_DIFF;
         }
         return GitDiffMode.DISABLED;