CppEditor: Move CppEditorOutline to CppTools

Change-Id: I75768f548f8f914e76fbdeaf3c318c207782fe1b
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/cpptools/cppeditoroutline.cpp

@@ -0,0 +1,286 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://www.qt.io/licensing.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "cppeditoroutline.h"
+
+#include <cpptools/cppmodelmanager.h>
+#include <cpptools/cpptoolsreuse.h>
+#include <cpptools/cpptoolssettings.h>
+#include <texteditor/texteditor.h>
+
+#include <cplusplus/OverviewModel.h>
+#include <utils/treeviewcombobox.h>
+
+#include <QSortFilterProxyModel>
+#include <QTimer>
+
+/*!
+    \class CppTools::CppEditorOutline
+    \brief A helper class that provides the outline model and widget,
+           e.g. for the editor's tool bar.
+
+    The caller is responsible for deleting the widget returned by widget().
+ */
+
+enum { UpdateOutlineIntervalInMs = 500 };
+
+namespace {
+
+class OverviewProxyModel : public QSortFilterProxyModel
+{
+    Q_OBJECT
+
+public:
+    OverviewProxyModel(CPlusPlus::OverviewModel *sourceModel, QObject *parent)
+        : QSortFilterProxyModel(parent)
+        , m_sourceModel(sourceModel)
+    {
+        setSourceModel(m_sourceModel);
+    }
+
+    bool filterAcceptsRow(int sourceRow,const QModelIndex &sourceParent) const
+    {
+        // Ignore generated symbols, e.g. by macro expansion (Q_OBJECT)
+        const QModelIndex sourceIndex = m_sourceModel->index(sourceRow, 0, sourceParent);
+        CPlusPlus::Symbol *symbol = m_sourceModel->symbolFromIndex(sourceIndex);
+        if (symbol && symbol->isGenerated())
+            return false;
+
+        return QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent);
+    }
+private:
+    CPlusPlus::OverviewModel *m_sourceModel;
+};
+
+QTimer *newSingleShotTimer(QObject *parent, int msInternal, const QString &objectName)
+{
+    QTimer *timer = new QTimer(parent);
+    timer->setObjectName(objectName);
+    timer->setSingleShot(true);
+    timer->setInterval(msInternal);
+    return timer;
+}
+
+} // anonymous namespace
+
+namespace CppTools {
+
+CppEditorOutline::CppEditorOutline(TextEditor::TextEditorWidget *editorWidget)
+    : QObject(editorWidget)
+    , m_editorWidget(editorWidget)
+    , m_combo(new Utils::TreeViewComboBox)
+    , m_model(new CPlusPlus::OverviewModel(this))
+    , m_proxyModel(new OverviewProxyModel(m_model, this))
+{
+    // Set up proxy model
+    if (CppTools::CppToolsSettings::instance()->sortedEditorDocumentOutline())
+        m_proxyModel->sort(0, Qt::AscendingOrder);
+    else
+        m_proxyModel->sort(-1, Qt::AscendingOrder); // don't sort yet, but set column for sortedOutline()
+    m_proxyModel->setDynamicSortFilter(true);
+    m_proxyModel->setSortCaseSensitivity(Qt::CaseInsensitive);
+
+    // Set up combo box
+    m_combo->setModel(m_proxyModel);
+
+    m_combo->setMinimumContentsLength(22);
+    QSizePolicy policy = m_combo->sizePolicy();
+    policy.setHorizontalPolicy(QSizePolicy::Expanding);
+    m_combo->setSizePolicy(policy);
+    m_combo->setMaxVisibleItems(40);
+
+    m_combo->setContextMenuPolicy(Qt::ActionsContextMenu);
+    m_sortAction = new QAction(tr("Sort Alphabetically"), m_combo);
+    m_sortAction->setCheckable(true);
+    m_sortAction->setChecked(isSorted());
+    connect(m_sortAction, &QAction::toggled,
+            CppTools::CppToolsSettings::instance(),
+            &CppTools::CppToolsSettings::setSortedEditorDocumentOutline);
+    m_combo->addAction(m_sortAction);
+
+    connect(m_combo, SIGNAL(activated(int)), this, SLOT(gotoSymbolInEditor()));
+    connect(m_combo, SIGNAL(currentIndexChanged(int)), this, SLOT(updateToolTip()));
+
+    // Set up timers
+    m_updateTimer = newSingleShotTimer(this, UpdateOutlineIntervalInMs,
+                                       QLatin1String("CppEditorOutline::m_updateTimer"));
+    connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(updateNow()));
+
+    m_updateIndexTimer = newSingleShotTimer(this, UpdateOutlineIntervalInMs,
+                                            QLatin1String("CppEditorOutline::m_updateIndexTimer"));
+    connect(m_updateIndexTimer, SIGNAL(timeout()), this, SLOT(updateIndexNow()));
+}
+
+void CppEditorOutline::update()
+{
+    m_updateTimer->start();
+}
+
+bool CppEditorOutline::isSorted() const
+{
+    return m_proxyModel->sortColumn() == 0;
+}
+
+void CppEditorOutline::setSorted(bool sort)
+{
+    if (sort != isSorted()) {
+        if (sort)
+            m_proxyModel->sort(0, Qt::AscendingOrder);
+        else
+            m_proxyModel->sort(-1, Qt::AscendingOrder);
+        bool block = m_sortAction->blockSignals(true);
+        m_sortAction->setChecked(m_proxyModel->sortColumn() == 0);
+        m_sortAction->blockSignals(block);
+        updateIndexNow();
+    }
+}
+
+CPlusPlus::OverviewModel *CppEditorOutline::model() const
+{
+    return m_model;
+}
+
+QModelIndex CppEditorOutline::modelIndex()
+{
+    if (!m_modelIndex.isValid()) {
+        int line = 0, column = 0;
+        m_editorWidget->convertPosition(m_editorWidget->position(), &line, &column);
+        m_modelIndex = indexForPosition(line, column);
+        emit modelIndexChanged(m_modelIndex);
+    }
+
+    return m_modelIndex;
+}
+
+QWidget *CppEditorOutline::widget() const
+{
+    return m_combo;
+}
+
+void CppEditorOutline::updateNow()
+{
+    CppTools::CppModelManager *cmmi = CppTools::CppModelManager::instance();
+    if (!cmmi)
+        return;
+
+    const CPlusPlus::Snapshot snapshot = cmmi->snapshot();
+    const QString filePath = m_editorWidget->textDocument()->filePath().toString();
+    CPlusPlus::Document::Ptr document = snapshot.document(filePath);
+    if (!document)
+        return;
+
+    if (document->editorRevision() != (unsigned) m_editorWidget->document()->revision()) {
+        m_updateTimer->start();
+        return;
+    }
+
+    m_model->rebuild(document);
+
+    m_combo->view()->expandAll();
+    updateIndexNow();
+}
+
+void CppEditorOutline::updateIndex()
+{
+    m_updateIndexTimer->start();
+}
+
+void CppEditorOutline::updateIndexNow()
+{
+    if (!m_model->document())
+        return;
+
+    const unsigned revision = m_editorWidget->document()->revision();
+    if (m_model->document()->editorRevision() != revision) {
+        m_updateIndexTimer->start();
+        return;
+    }
+
+    m_updateIndexTimer->stop();
+
+    m_modelIndex = QModelIndex(); //invalidate
+    QModelIndex comboIndex = modelIndex();
+
+    if (comboIndex.isValid()) {
+        bool blocked = m_combo->blockSignals(true);
+        m_combo->setCurrentIndex(m_proxyModel->mapFromSource(comboIndex));
+        updateToolTip();
+        m_combo->blockSignals(blocked);
+    }
+}
+
+void CppEditorOutline::updateToolTip()
+{
+    m_combo->setToolTip(m_combo->currentText());
+}
+
+void CppEditorOutline::gotoSymbolInEditor()
+{
+    const QModelIndex modelIndex = m_combo->view()->currentIndex();
+    const QModelIndex sourceIndex = m_proxyModel->mapToSource(modelIndex);
+    CPlusPlus::Symbol *symbol = m_model->symbolFromIndex(sourceIndex);
+    if (!symbol)
+        return;
+
+    const TextEditor::TextEditorWidget::Link &link = CppTools::linkToSymbol(symbol);
+    if (!link.hasValidTarget())
+        return;
+
+    Core::EditorManager::cutForwardNavigationHistory();
+    Core::EditorManager::addCurrentPositionToNavigationHistory();
+    m_editorWidget->gotoLine(link.targetLine, link.targetColumn);
+    m_editorWidget->activateEditor();
+}
+
+QModelIndex CppEditorOutline::indexForPosition(int line, int column,
+                                               const QModelIndex &rootIndex) const
+{
+    QModelIndex lastIndex = rootIndex;
+
+    const int rowCount = m_model->rowCount(rootIndex);
+    for (int row = 0; row < rowCount; ++row) {
+        const QModelIndex index = m_model->index(row, 0, rootIndex);
+        CPlusPlus::Symbol *symbol = m_model->symbolFromIndex(index);
+        if (symbol && symbol->line() > unsigned(line))
+            break;
+        lastIndex = index;
+    }
+
+    if (lastIndex != rootIndex) {
+        // recurse
+        lastIndex = indexForPosition(line, column, lastIndex);
+    }
+
+    return lastIndex;
+}
+
+} // namespace CppTools
+
+#include <cppeditoroutline.moc>