Move git specific stuff out of diff editor plugin

Move it to the git plugin.

Change-Id: I8151573ed50df70776f7ebf0475dd41fb84fae83
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/diffeditor/descriptionwidgetwatcher.cpp

@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "descriptionwidgetwatcher.h"
+#include "diffeditor.h"
+#include "diffeditorcontroller.h"
+
+#include <coreplugin/editormanager/documentmodel.h>
+#include <coreplugin/editormanager/editormanager.h>
+#include <texteditor/texteditor.h>
+
+using namespace Core;
+
+namespace DiffEditor {
+
+DescriptionWidgetWatcher::DescriptionWidgetWatcher(DiffEditorController *controller)
+    : QObject(controller), m_document(controller->document())
+{
+    const QList<IEditor *> editors = DocumentModel::editorsForDocument(controller->document());
+    for (auto *editor : editors) {
+        if (TextEditor::TextEditorWidget *widget = descriptionWidget(editor))
+            m_widgets.append(widget);
+    }
+
+    connect(EditorManager::instance(), &EditorManager::editorOpened,
+            [this](IEditor *editor) {
+        if (TextEditor::TextEditorWidget *widget = descriptionWidget(editor)) {
+            m_widgets.append(widget);
+            emit descriptionWidgetAdded(widget);
+        }
+    });
+
+    connect(EditorManager::instance(), &EditorManager::editorAboutToClose,
+            [this](IEditor *editor) {
+        if (TextEditor::TextEditorWidget *widget = descriptionWidget(editor)) {
+            emit descriptionWidgetRemoved(widget);
+            m_widgets.removeAll(widget);
+        }
+    });
+}
+
+QList<TextEditor::TextEditorWidget *> DescriptionWidgetWatcher::descriptionWidgets() const
+{
+    return m_widgets;
+}
+
+TextEditor::TextEditorWidget *DescriptionWidgetWatcher::descriptionWidget(Core::IEditor *editor) const
+{
+    if (Internal::DiffEditor *diffEditor = qobject_cast<Internal::DiffEditor *>(editor)) {
+        if (diffEditor->document() == m_document)
+            return diffEditor->descriptionWidget();
+    }
+    return nullptr;
+}
+
+} // namespace DiffEditor

src/plugins/diffeditor/descriptionwidgetwatcher.h

@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "diffeditor_global.h"
+
+#include <QObject>
+
+namespace Core {
+class IDocument;
+class IEditor;
+}
+namespace TextEditor { class TextEditorWidget; }
+
+namespace DiffEditor {
+
+class DiffEditorController;
+
+class DIFFEDITOR_EXPORT DescriptionWidgetWatcher : public QObject
+{
+    Q_OBJECT
+public:
+    explicit DescriptionWidgetWatcher(DiffEditorController *controller);
+    QList<TextEditor::TextEditorWidget *> descriptionWidgets() const;
+
+signals:
+    void descriptionWidgetAdded(TextEditor::TextEditorWidget *editor);
+    void descriptionWidgetRemoved(TextEditor::TextEditorWidget *editor);
+
+private:
+    TextEditor::TextEditorWidget *descriptionWidget(Core::IEditor *editor) const;
+
+    QList<TextEditor::TextEditorWidget *> m_widgets;
+    Core::IDocument *m_document = nullptr;
+};
+
+} // namespace DiffEditor

src/plugins/diffeditor/diffeditor.cpp

@@ -81,22 +81,11 @@ public:
 
     virtual QSize sizeHint() const override;
 
-signals:
-    void requestBranchList();
-
 protected:
-    void mouseMoveEvent(QMouseEvent *e) override;
-    void mouseReleaseEvent(QMouseEvent *e) override;
-
     void setDisplaySettings(const DisplaySettings &ds) override;
     void setMarginSettings(const MarginSettings &ms) override;
 
-    bool findContentsUnderCursor(const QTextCursor &cursor);
-    void highlightCurrentContents();
-    void handleCurrentContents();
-
 private:
-    QTextCursor m_currentCursor;
     Core::IContext *m_context;
 };
 
@@ -153,68 +142,6 @@ void DescriptionEditorWidget::setMarginSettings(const MarginSettings &ms)
     TextEditorWidget::setMarginSettings(MarginSettings());
 }
 
-void DescriptionEditorWidget::mouseMoveEvent(QMouseEvent *e)
-{
-    if (e->buttons()) {
-        TextEditorWidget::mouseMoveEvent(e);
-        return;
-    }
-
-    Qt::CursorShape cursorShape;
-
-    const QTextCursor cursor = cursorForPosition(e->pos());
-    if (findContentsUnderCursor(cursor)) {
-        highlightCurrentContents();
-        cursorShape = Qt::PointingHandCursor;
-    } else {
-        setExtraSelections(OtherSelection, QList<QTextEdit::ExtraSelection>());
-        cursorShape = Qt::IBeamCursor;
-    }
-
-    TextEditorWidget::mouseMoveEvent(e);
-    viewport()->setCursor(cursorShape);
-}
-
-void DescriptionEditorWidget::mouseReleaseEvent(QMouseEvent *e)
-{
-    if (e->button() == Qt::LeftButton && !(e->modifiers() & Qt::ShiftModifier)) {
-        const QTextCursor cursor = cursorForPosition(e->pos());
-        if (findContentsUnderCursor(cursor)) {
-            handleCurrentContents();
-            e->accept();
-            return;
-        }
-    }
-
-    TextEditorWidget::mouseReleaseEvent(e);
-}
-
-bool DescriptionEditorWidget::findContentsUnderCursor(const QTextCursor &cursor)
-{
-    m_currentCursor = cursor;
-    return cursor.block().text() == Constants::EXPAND_BRANCHES;
-}
-
-void DescriptionEditorWidget::highlightCurrentContents()
-{
-    QTextEdit::ExtraSelection sel;
-    sel.cursor = m_currentCursor;
-    sel.cursor.select(QTextCursor::LineUnderCursor);
-    sel.format.setUnderlineStyle(QTextCharFormat::SingleUnderline);
-    const QColor textColor = TextEditorSettings::fontSettings().formatFor(C_TEXT).foreground();
-    sel.format.setUnderlineColor(textColor.isValid() ? textColor : palette().color(QPalette::Foreground));
-    setExtraSelections(TextEditorWidget::OtherSelection,
-                       QList<QTextEdit::ExtraSelection>() << sel);
-}
-
-void DescriptionEditorWidget::handleCurrentContents()
-{
-    m_currentCursor.select(QTextCursor::LineUnderCursor);
-    m_currentCursor.removeSelectedText();
-    m_currentCursor.insertText("Branches: Expanding...");
-    emit requestBranchList();
-}
-
 ///////////////////////////////// DiffEditor //////////////////////////////////
 
 DiffEditor::DiffEditor()
@@ -296,8 +223,6 @@ void DiffEditor::setDocument(QSharedPointer<DiffEditorDocument> doc)
 
     m_document = doc;
 
-    connect(m_descriptionWidget, &DescriptionEditorWidget::requestBranchList,
-            m_document.data(), &DiffEditorDocument::requestMoreInformation);
     connect(m_document.data(), &DiffEditorDocument::documentChanged,
             this, &DiffEditor::documentHasChanged);
     connect(m_document.data(), &DiffEditorDocument::descriptionChanged,

src/plugins/diffeditor/diffeditor.pro

@@ -1,7 +1,9 @@
 DEFINES += DIFFEDITOR_LIBRARY
 include(../../qtcreatorplugin.pri)
 
-HEADERS += diffeditor_global.h \
+HEADERS += \
+        descriptionwidgetwatcher.h \
+        diffeditor_global.h \
         diffeditor.h \
         diffeditorconstants.h \
         diffeditorcontroller.h \
@@ -17,7 +19,9 @@ HEADERS += diffeditor_global.h \
         unifieddiffeditorwidget.h \
         diffeditoricons.h
 
-SOURCES += diffeditor.cpp \
+SOURCES += \
+        descriptionwidgetwatcher.cpp \
+        diffeditor.cpp \
         diffeditorcontroller.cpp \
         diffeditordocument.cpp \
         diffeditorfactory.cpp \

src/plugins/diffeditor/diffeditor.qbs

@@ -14,6 +14,8 @@ QtcPlugin {
     ]
 
     files: [
+        "descriptionwidgetwatcher.cpp",
+        "descriptionwidgetwatcher.h",
         "diffeditor.cpp",
         "diffeditor.h",
         "diffeditor.qrc",

src/plugins/diffeditor/diffeditorconstants.h

@@ -41,7 +41,5 @@ const char UNIFIED_VIEW_ID[] = "DiffEditor.Unified";
 
 const char G_TOOLS_DIFF[] = "QtCreator.Group.Tools.Options";
 
-const char EXPAND_BRANCHES[] = "Branches: <Expand>";
-
 } // namespace Constants
 } // namespace DiffEditor

src/plugins/diffeditor/diffeditorcontroller.cpp

@@ -65,12 +65,6 @@ bool DiffEditorController::ignoreWhitespace() const
     return m_document->ignoreWhitespace();
 }
 
-QString DiffEditorController::revisionFromDescription() const
-{
-    // TODO: This is specific for git and does not belong here at all!
-    return m_document->description().mid(7, 12);
-}
-
 QString DiffEditorController::makePatch(int fileIndex, int chunkIndex,
                                         PatchOptions options) const
 {
@@ -105,18 +99,9 @@ void DiffEditorController::setDescription(const QString &description)
     m_document->setDescription(description);
 }
 
-void DiffEditorController::branchesReceived(const QString &branches)
+QString DiffEditorController::description() const
 {
-    QString tmp = m_document->description();
-    tmp.replace(Constants::EXPAND_BRANCHES, branches);
-    m_document->setDescription(tmp);
-}
-
-void DiffEditorController::requestMoreInformation()
-{
-    const QString rev = revisionFromDescription();
-    if (!rev.isEmpty())
-        emit requestInformationForCommit(rev);
+    return m_document->description();
 }
 
 /**

src/plugins/diffeditor/diffeditorcontroller.h

@@ -51,8 +51,6 @@ public:
     int contextLineCount() const;
     bool ignoreWhitespace() const;
 
-    QString revisionFromDescription() const;
-
     enum PatchOption {
         NoOption = 0,
         Revert = 1,
@@ -65,13 +63,12 @@ public:
                                                  const QString &displayName);
     static DiffEditorController *controller(Core::IDocument *document);
 
-    void branchesReceived(const QString &branches);
     void requestChunkActions(QMenu *menu, int fileIndex, int chunkIndex);
     bool chunkExists(int fileIndex, int chunkIndex) const;
+    Core::IDocument *document() const;
 
 signals:
     void chunkActionsRequested(QMenu *menu, int fileIndex, int chunkIndex);
-    void requestInformationForCommit(const QString &revision);
 
 protected:
     // reloadFinished() should be called
@@ -84,14 +81,11 @@ protected:
                       const QString &baseDirectory = QString(),
                       const QString &startupFile = QString());
     void setDescription(const QString &description);
+    QString description() const;
     void forceContextLineCount(int lines);
-    Core::IDocument *document() const;
 
 private:
-    void requestMoreInformation();
-
     Internal::DiffEditorDocument *const m_document;
-
     bool m_isReloading = false;
 
     friend class Internal::DiffEditorDocument;

src/plugins/diffeditor/diffeditordocument.cpp

@@ -69,11 +69,6 @@ void DiffEditorDocument::setController(DiffEditorController *controller)
     if (m_controller)
         m_controller->deleteLater();
     m_controller = controller;
-
-    if (m_controller) {
-        connect(this, &DiffEditorDocument::requestMoreInformation,
-                m_controller, &DiffEditorController::requestMoreInformation);
-    }
 }
 
 DiffEditorController *DiffEditorDocument::controller() const

src/plugins/diffeditor/diffeditordocument.h

@@ -90,7 +90,6 @@ signals:
     void temporaryStateChanged();
     void documentChanged();
     void descriptionChanged();
-    void requestMoreInformation();
 
 private:
     void beginReload();