Add Locator to extra editor windows

And open a popup if other windows are active.
That way we avoid switching to the main window.

Change-Id: Ia6d8d3fb4361ac31e406356d40056a2c0b79d114
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/coreplugin/editormanager/editorwindow.cpp

@@ -28,9 +28,14 @@
 #include "editorarea.h"
 #include "editormanager_p.h"
 
+#include <aggregation/aggregate.h>
 #include <coreplugin/icontext.h>
 #include <coreplugin/icore.h>
+#include <coreplugin/locator/locator.h>
+#include <coreplugin/locator/locatorwidget.h>
+#include <coreplugin/statusbarmanager.h>
 
+#include <QStatusBar>
 #include <QVBoxLayout>
 
 namespace Core {
@@ -46,6 +51,14 @@ EditorWindow::EditorWindow(QWidget *parent) :
     setLayout(layout);
     layout->addWidget(m_area);
     setFocusProxy(m_area);
+    auto statusBar = new QStatusBar;
+    layout->addWidget(statusBar);
+    auto splitter = new NonResizingSplitter(statusBar);
+    splitter->setChildrenCollapsible(false);
+    statusBar->addPermanentWidget(splitter, 10);
+    auto locatorWidget = createStaticLocatorWidget(Locator::instance());
+    splitter->addWidget(locatorWidget);
+    splitter->addWidget(new QWidget);
     setAttribute(Qt::WA_DeleteOnClose);
     setAttribute(Qt::WA_QuitOnClose, false); // don't prevent Qt Creator from closing
     resize(QSize(800, 600));
@@ -61,6 +74,11 @@ EditorWindow::EditorWindow(QWidget *parent) :
         deleteLater();
     });
     updateWindowTitle();
+
+    // register locator widget for this window
+    auto agg = new Aggregation::Aggregate;
+    agg->add(this);
+    agg->add(locatorWidget);
 }
 
 EditorWindow::~EditorWindow()

src/plugins/coreplugin/locator/locator.cpp

@@ -86,6 +86,11 @@ Locator::~Locator()
     qDeleteAll(m_customFilters);
 }
 
+Locator *Locator::instance()
+{
+    return m_instance;
+}
+
 void Locator::initialize(CorePlugin *corePlugin, const QStringList &, QString *)
 {
     m_corePlugin = corePlugin;
@@ -103,15 +108,14 @@ void Locator::initialize(CorePlugin *corePlugin, const QStringList &, QString *)
     ActionContainer *mtools = ActionManager::actionContainer(Constants::M_TOOLS);
     mtools->addAction(cmd);
 
-    auto locatorWidget = new LocatorWidget(this);
-    new LocatorPopup(locatorWidget, locatorWidget); // child of locatorWidget
+    m_locatorWidget = createStaticLocatorWidget(this);
     StatusBarWidget *view = new StatusBarWidget;
-    view->setWidget(locatorWidget);
+    view->setWidget(m_locatorWidget);
     view->setContext(Context("LocatorWidget"));
     view->setPosition(StatusBarWidget::First);
     m_corePlugin->addAutoReleasedObject(view);
 
-    new LocatorManager(locatorWidget);
+    new LocatorManager(this);
 
     m_openDocumentsFilter = new OpenDocumentsFilter;
     m_corePlugin->addObject(m_openDocumentsFilter);
@@ -135,6 +139,11 @@ void Locator::initialize(CorePlugin *corePlugin, const QStringList &, QString *)
 
 void Locator::extensionsInitialized()
 {
+    // register locator widget for main window
+    auto agg = new Aggregation::Aggregate;
+    agg->add(ICore::mainWindow());
+    agg->add(m_locatorWidget);
+
     m_filters = ExtensionSystem::PluginManager::getObjects<ILocatorFilter>();
     Utils::sort(m_filters, [](const ILocatorFilter *first, const ILocatorFilter *second) -> bool {
         if (first->priority() != second->priority())
@@ -341,6 +350,11 @@ void Locator::setRefreshInterval(int interval)
     m_refreshTimer.start();
 }
 
+LocatorWidget *Locator::mainLocatorWidget()
+{
+    return m_instance->m_locatorWidget;
+}
+
 void Locator::refresh(QList<ILocatorFilter *> filters)
 {
     if (filters.isEmpty())

src/plugins/coreplugin/locator/locator.h

@@ -43,6 +43,7 @@ class CorePlugin;
 class OpenDocumentsFilter;
 class FileSystemFilter;
 class LocatorSettingsPage;
+class LocatorWidget;
 class ExternalToolsFilter;
 
 class Locator : public QObject
@@ -53,6 +54,8 @@ public:
     Locator();
     ~Locator();
 
+    static Locator *instance();
+
     void initialize(CorePlugin *corePlugin, const QStringList &arguments, QString *errorMessage);
     void extensionsInitialized();
     bool delayedInitialize();
@@ -63,6 +66,7 @@ public:
     void setCustomFilters(QList<ILocatorFilter *> f);
     int refreshInterval();
     void setRefreshInterval(int interval);
+    static LocatorWidget *mainLocatorWidget();
 
 signals:
     void filtersChanged();
@@ -89,6 +93,7 @@ private:
     ExecuteFilter *m_executeFilter;
     CorePlugin *m_corePlugin = nullptr;
     ExternalToolsFilter *m_externalToolsFilter;
+    LocatorWidget *m_locatorWidget;
 };
 
 } // namespace Internal

src/plugins/coreplugin/locator/locatormanager.cpp

@@ -29,29 +29,45 @@
 #include "locator.h"
 #include "locatorwidget.h"
 
+#include <aggregation/aggregate.h>
+#include <coreplugin/icore.h>
 #include <extensionsystem/pluginmanager.h>
 #include <utils/qtcassert.h>
 
+using namespace Core::Internal;
+
 namespace Core {
 
-static Internal::LocatorWidget *m_locatorWidget = 0;
-
-LocatorManager::LocatorManager(Internal::LocatorWidget *locatorWidget)
-  : QObject(locatorWidget)
+LocatorManager::LocatorManager(QObject *parent)
+  : QObject(parent)
 {
-    m_locatorWidget = locatorWidget;
+}
+
+static LocatorWidget *locatorWidget()
+{
+    static QPointer<LocatorPopup> popup;
+    QWidget *window = ICore::dialogParent()->window();
+    if (auto *widget = Aggregation::query<LocatorWidget>(window)) {
+        if (popup)
+            popup->close();
+        return widget;
+    }
+    if (!popup) {
+        popup = createLocatorPopup(Locator::instance(), window);
+        popup->show();
+    }
+    return popup->inputWidget();
 }
 
 void LocatorManager::showFilter(ILocatorFilter *filter)
 {
     QTC_ASSERT(filter, return);
-    QTC_ASSERT(m_locatorWidget, return);
     QString searchText = tr("<type here>");
-    const QString currentText = m_locatorWidget->currentText().trimmed();
+    const QString currentText = locatorWidget()->currentText().trimmed();
     // add shortcut string at front or replace existing shortcut string
     if (!currentText.isEmpty()) {
         searchText = currentText;
-        foreach (ILocatorFilter *otherfilter, Internal::Locator::filters()) {
+        foreach (ILocatorFilter *otherfilter, Locator::filters()) {
             if (currentText.startsWith(otherfilter->shortcutString() + QLatin1Char(' '))) {
                 searchText = currentText.mid(otherfilter->shortcutString().length() + 1);
                 break;
@@ -66,8 +82,7 @@ void LocatorManager::showFilter(ILocatorFilter *filter)
 void LocatorManager::show(const QString &text,
                           int selectionStart, int selectionLength)
 {
-    QTC_ASSERT(m_locatorWidget, return);
-    m_locatorWidget->showText(text, selectionStart, selectionLength);
+    locatorWidget()->showText(text, selectionStart, selectionLength);
 }
 
-} // namespace Internal
+} // namespace Core

src/plugins/coreplugin/locator/locatormanager.h

@@ -40,7 +40,7 @@ class CORE_EXPORT LocatorManager : public QObject
     Q_OBJECT
 
 public:
-    LocatorManager(Internal::LocatorWidget *locatorWidget);
+    LocatorManager(QObject *parent = 0);
 
     static void showFilter(ILocatorFilter *filter);
     static void show(const QString &text, int selectionStart = -1, int selectionLength = 0);

src/plugins/coreplugin/locator/locatorwidget.cpp

@@ -49,7 +49,9 @@
 #include <utils/stylehelper.h>
 #include <utils/utilsicons.h>
 
+#include <QApplication>
 #include <QColor>
+#include <QDesktopWidget>
 #include <QFileInfo>
 #include <QTimer>
 #include <QEvent>
@@ -112,6 +114,28 @@ public:
     void showCurrentItemToolTip();
 
     void keyPressEvent(QKeyEvent *event);
+    bool eventFilter(QObject *watched, QEvent *event);
+};
+
+class TopLeftLocatorPopup : public LocatorPopup
+{
+public:
+    TopLeftLocatorPopup(LocatorWidget *locatorWidget)
+        : LocatorPopup(locatorWidget, locatorWidget) {}
+
+protected:
+    void updateGeometry() override;
+    void inputLostFocus() override;
+};
+
+class CenteredLocatorPopup : public LocatorPopup
+{
+public:
+    CenteredLocatorPopup(LocatorWidget *locatorWidget, QWidget *parent)
+        : LocatorPopup(locatorWidget, parent) {}
+
+protected:
+    void updateGeometry() override;
 };
 
 // =========== LocatorModel ===========
@@ -226,6 +250,8 @@ CompletionList::CompletionList(QWidget *parent)
     const QStyleOptionViewItem &option = viewOptions();
     const QSize shint = itemDelegate()->sizeHint(option, QModelIndex());
     setFixedHeight(shint.height() * 17 + frameWidth() * 2);
+
+    installEventFilter(this);
 }
 
 void CompletionList::setModel(QAbstractItemModel *newModel)
@@ -241,20 +267,41 @@ void CompletionList::setModel(QAbstractItemModel *newModel)
     }
 }
 
-void LocatorPopup::resize()
+void LocatorPopup::updateGeometry()
 {
-    static const int MIN_WIDTH = 730;
-    const QSize windowSize = m_window ? m_window->size() : QSize(MIN_WIDTH, 0);
-
-    const int width = qMax(MIN_WIDTH, windowSize.width() * 2 / 3);
-    m_preferredSize = QSize(width, sizeHint().height());
-    QWidget::resize(m_preferredSize);
     m_tree->resizeHeaders();
 }
 
-QSize LocatorPopup::preferredSize() const
+void TopLeftLocatorPopup::updateGeometry()
 {
-    return m_preferredSize;
+    QTC_ASSERT(parentWidget(), return);
+    const QSize size = preferredSize();
+    const QRect rect(parentWidget()->mapToGlobal(QPoint(0, -size.height())), size);
+    setGeometry(rect);
+    LocatorPopup::updateGeometry();
+}
+
+void CenteredLocatorPopup::updateGeometry()
+{
+    QTC_ASSERT(parentWidget(), return);
+    const QSize size = preferredSize();
+    const QSize parentSize = parentWidget()->size();
+    const QPoint pos = parentWidget()->mapToGlobal({(parentSize.width() - size.width()) / 2,
+                                                    parentSize.height() / 2 - size.height()});
+    QRect rect(pos, size);
+    // invisible widget doesn't have the right screen set yet, so use the parent widget to
+    // check for available geometry
+    const QRect available = QApplication::desktop()->availableGeometry(parentWidget());
+    if (rect.right() > available.right())
+        rect.moveRight(available.right());
+    if (rect.bottom() > available.bottom())
+        rect.moveBottom(available.bottom());
+    if (rect.top() < available.top())
+        rect.moveTop(available.top());
+    if (rect.left() < available.left())
+        rect.moveLeft(available.left());
+    setGeometry(rect);
+    LocatorPopup::updateGeometry();
 }
 
 void LocatorPopup::updateWindow()
@@ -271,25 +318,36 @@ void LocatorPopup::updateWindow()
 
 bool LocatorPopup::event(QEvent *event)
 {
-    if (event->type() == QEvent::ParentChange)
+    if (event->type() == QEvent::ParentChange) {
         updateWindow();
+    } else if (event->type() == QEvent::Show)
+        updateGeometry();
     return QWidget::event(event);
 }
 
 bool LocatorPopup::eventFilter(QObject *watched, QEvent *event)
 {
     if (watched == m_window && event->type() == QEvent::Resize)
-        resize();
+        updateGeometry();
     return QWidget::eventFilter(watched, event);
 }
 
-void LocatorPopup::showPopup()
+QSize LocatorPopup::preferredSize()
+{
+    static const int MIN_WIDTH = 730;
+    const QSize windowSize = m_window ? m_window->size() : QSize(MIN_WIDTH, 0);
+
+    const int width = qMax(MIN_WIDTH, windowSize.width() * 2 / 3);
+    return QSize(width, sizeHint().height());
+}
+
+void TopLeftLocatorPopup::inputLostFocus()
+{
+    hide();
+}
+
+void LocatorPopup::inputLostFocus()
 {
-    QTC_ASSERT(parentWidget(), return);
-    const QSize size = preferredSize();
-    const QRect rect(parentWidget()->mapToGlobal(QPoint(0, -size.height())), size);
-    setGeometry(rect);
-    show();
 }
 
 void CompletionList::resizeHeaders()
@@ -300,10 +358,9 @@ void CompletionList::resizeHeaders()
 
 LocatorPopup::LocatorPopup(LocatorWidget *locatorWidget, QWidget *parent)
     : QWidget(parent),
-      m_tree(new CompletionList(this))
+      m_tree(new CompletionList(this)),
+      m_inputWidget(locatorWidget)
 {
-    setWindowFlags(Qt::ToolTip);
-
     m_tree->setFrameStyle(QFrame::NoFrame);
     m_tree->setModel(locatorWidget->model());
 
@@ -315,8 +372,9 @@ LocatorPopup::LocatorPopup(LocatorWidget *locatorWidget, QWidget *parent)
     layout->addWidget(m_tree);
 
     connect(locatorWidget, &LocatorWidget::parentChanged, this, &LocatorPopup::updateWindow);
-    connect(locatorWidget, &LocatorWidget::showPopup, this, &LocatorPopup::showPopup);
-    connect(locatorWidget, &LocatorWidget::hidePopup, this, &LocatorPopup::hide);
+    connect(locatorWidget, &LocatorWidget::showPopup, this, &LocatorPopup::show);
+    connect(locatorWidget, &LocatorWidget::hidePopup, this, &LocatorPopup::close);
+    connect(locatorWidget, &LocatorWidget::lostFocus, this, &LocatorPopup::inputLostFocus);
     connect(locatorWidget, &LocatorWidget::selectRow, m_tree, [this](int row) {
         m_tree->setCurrentIndex(m_tree->model()->index(row, 0));
     });
@@ -331,7 +389,7 @@ LocatorPopup::LocatorPopup(LocatorWidget *locatorWidget, QWidget *parent)
                     locatorWidget->scheduleAcceptEntry(index);
             });
 
-    resize();
+    updateGeometry();
 }
 
 CompletionList *LocatorPopup::completionList() const
@@ -339,6 +397,11 @@ CompletionList *LocatorPopup::completionList() const
     return m_tree;
 }
 
+LocatorWidget *LocatorPopup::inputWidget() const
+{
+    return m_inputWidget;
+}
+
 void LocatorPopup::focusOutEvent(QFocusEvent *event) {
     if (event->reason() == Qt::ActiveWindowFocusReason)
         hide();
@@ -402,6 +465,22 @@ void CompletionList::keyPressEvent(QKeyEvent *event)
     Utils::TreeView::keyPressEvent(event);
 }
 
+bool CompletionList::eventFilter(QObject *watched, QEvent *event)
+{
+    if (watched == this && event->type() == QEvent::ShortcutOverride) {
+        QKeyEvent *ke = static_cast<QKeyEvent *>(event);
+        switch (ke->key()) {
+        case Qt::Key_Escape:
+            if (!ke->modifiers()) {
+                event->accept();
+                return true;
+            }
+            break;
+        }
+    }
+    return Utils::TreeView::eventFilter(watched, event);
+}
+
 // =========== LocatorWidget ===========
 
 LocatorWidget::LocatorWidget(Locator *locator) :
@@ -576,7 +655,7 @@ bool LocatorWidget::eventFilter(QObject *obj, QEvent *event)
             }
         }
     } else if (obj == m_fileLineEdit && event->type() == QEvent::FocusOut) {
-        emit hidePopup();
+        emit lostFocus();
     } else if (obj == m_fileLineEdit && event->type() == QEvent::FocusIn) {
         QFocusEvent *fev = static_cast<QFocusEvent *>(event);
         if (fev->reason() != Qt::ActiveWindowFocusReason)
@@ -796,5 +875,23 @@ void LocatorWidget::addSearchResults(int firstIndex, int endIndex)
     }
 }
 
+LocatorWidget *createStaticLocatorWidget(Locator *locator)
+{
+    auto widget = new LocatorWidget(locator);
+    auto popup = new TopLeftLocatorPopup(widget); // owned by widget
+    popup->setWindowFlags(Qt::ToolTip);
+    return widget;
+}
+
+LocatorPopup *createLocatorPopup(Locator *locator, QWidget *parent)
+{
+    auto widget = new LocatorWidget(locator);
+    auto popup = new CenteredLocatorPopup(widget, parent);
+    popup->layout()->addWidget(widget);
+    popup->setWindowFlags(Qt::Popup);
+    popup->setAttribute(Qt::WA_DeleteOnClose);
+    return popup;
+}
+
 } // namespace Internal
 } // namespace Core

src/plugins/coreplugin/locator/locatorwidget.h

@@ -64,6 +64,7 @@ public:
 
 signals:
     void showCurrentItemToolTip();
+    void lostFocus();
     void hidePopup();
     void selectRow(int row);
     void handleKey(QKeyEvent *keyEvent); // only use with DirectConnection, event is deleted
@@ -109,21 +110,28 @@ public:
     LocatorPopup(LocatorWidget *locatorWidget, QWidget *parent = 0);
 
     CompletionList *completionList() const;
+    LocatorWidget *inputWidget() const;
 
     void focusOutEvent (QFocusEvent *event) override;
-    void resize();
-    QSize preferredSize() const;
     bool event(QEvent *event) override;
     bool eventFilter(QObject *watched, QEvent *event) override;
 
+protected:
+    QSize preferredSize();
+    virtual void updateGeometry();
+    virtual void inputLostFocus();
+
+    QPointer<QWidget> m_window;
+
 private:
-    void showPopup();
+    void updateWindow();
 
     CompletionList *m_tree;
-    QSize m_preferredSize;
-    QPointer<QWidget> m_window;
-    void updateWindow();
+    LocatorWidget *m_inputWidget;
 };
 
+LocatorWidget *createStaticLocatorWidget(Locator *locator);
+LocatorPopup *createLocatorPopup(Locator *locator, QWidget *parent);
+
 } // namespace Internal
 } // namespace Core