ProjectExplorer: Allow multi-selection in issues pane

Users should be able to copy or remove several issues at once.

Fixes: QTCREATORBUG-25547
Fixes: QTCREATORBUG-26720
Change-Id: I1ac75a3445c37200b6a01dd8c5d79d2b69c54a3c
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/projectexplorer/copytaskhandler.cpp

@@ -25,8 +25,6 @@
 
 #include "copytaskhandler.h"
 
-#include "task.h"
-
 #include <coreplugin/coreconstants.h>
 
 #include <QAction>
@@ -36,25 +34,27 @@
 using namespace ProjectExplorer;
 using namespace ProjectExplorer::Internal;
 
-void CopyTaskHandler::handle(const Task &task)
+void CopyTaskHandler::handle(const Tasks &tasks)
 {
-    QString type;
-    switch (task.type) {
-    case Task::Error:
-        //: Task is of type: error
-        type = tr("error:") + QLatin1Char(' ');
-        break;
-    case Task::Warning:
-        //: Task is of type: warning
-        type = tr("warning:") + QLatin1Char(' ');
-        break;
-    default:
-        break;
+    QStringList lines;
+    for (const Task &task : tasks) {
+        QString type;
+        switch (task.type) {
+        case Task::Error:
+            //: Task is of type: error
+            type = tr("error:") + QLatin1Char(' ');
+            break;
+        case Task::Warning:
+            //: Task is of type: warning
+            type = tr("warning:") + QLatin1Char(' ');
+            break;
+        default:
+            break;
+        }
+        lines << task.file.toUserOutput() + ':' + QString::number(task.line)
+                 + ": " + type + task.description();
     }
-
-    QApplication::clipboard()->setText(task.file.toUserOutput() + QLatin1Char(':') +
-                                       QString::number(task.line) + QLatin1String(": ")
-                                       + type + task.description());
+    QApplication::clipboard()->setText(lines.join('\n'));
 }
 
 Utils::Id CopyTaskHandler::actionManagerId() const

src/plugins/projectexplorer/copytaskhandler.h

@@ -35,8 +35,9 @@ class CopyTaskHandler : public ITaskHandler
     Q_OBJECT
 
 public:
-    bool canHandle(const Task &) const override { return true; }
-    void handle(const Task &task) override;
+    CopyTaskHandler() : ITaskHandler(true) {}
+
+    void handle(const Tasks &tasks) override;
     Utils::Id actionManagerId() const override;
     QAction *createAction(QObject *parent) const override;
 };

src/plugins/projectexplorer/itaskhandler.h

@@ -26,6 +26,7 @@
 #pragma once
 
 #include "projectexplorer_export.h"
+#include "task.h"
 
 #include <utils/id.h>
 
@@ -37,21 +38,26 @@ class QAction;
 QT_END_NAMESPACE
 
 namespace ProjectExplorer {
-class Task;
 
 class PROJECTEXPLORER_EXPORT ITaskHandler : public QObject
 {
     Q_OBJECT
 
 public:
-    ITaskHandler();
+    explicit ITaskHandler(bool isMultiHandler = false);
     ~ITaskHandler() override;
 
     virtual bool isDefaultHandler() const { return false; }
-    virtual bool canHandle(const Task &) const = 0;
-    virtual void handle(const Task &) = 0;
+    virtual bool canHandle(const Task &) const { return m_isMultiHandler; }
+    virtual void handle(const Task &);       // Non-multi-handlers should implement this.
+    virtual void handle(const Tasks &tasks); // Multi-handlers should implement this.
     virtual Utils::Id actionManagerId() const { return Utils::Id(); }
     virtual QAction *createAction(QObject *parent) const = 0;
+
+    bool canHandle(const Tasks &tasks) const;
+
+private:
+    const bool m_isMultiHandler;
 };
 
 } // namespace ProjectExplorer

src/plugins/projectexplorer/removetaskhandler.cpp

@@ -33,9 +33,10 @@
 namespace ProjectExplorer {
 namespace Internal {
 
-void RemoveTaskHandler::handle(const Task &task)
+void RemoveTaskHandler::handle(const Tasks &tasks)
 {
-    TaskHub::removeTask(task);
+    for (const Task &task : tasks)
+        TaskHub::removeTask(task);
 }
 
 QAction *RemoveTaskHandler::createAction(QObject *parent) const

src/plugins/projectexplorer/removetaskhandler.h

@@ -35,8 +35,9 @@ class RemoveTaskHandler : public ITaskHandler
     Q_OBJECT
 
 public:
-    bool canHandle(const Task &) const override { return true; }
-    void handle(const Task &task) override;
+    RemoveTaskHandler() : ITaskHandler(true) {}
+
+    void handle(const Tasks &tasks) override;
     QAction *createAction(QObject *parent) const override;
 };
 

src/plugins/projectexplorer/taskmodel.cpp

@@ -29,6 +29,7 @@
 #include "task.h"
 #include "taskhub.h"
 
+#include <utils/algorithm.h>
 #include <utils/qtcassert.h>
 
 #include <QFileInfo>
@@ -286,6 +287,13 @@ Task TaskModel::task(const QModelIndex &index) const
     return m_tasks.at(row);
 }
 
+Tasks TaskModel::tasks(const QModelIndexList &indexes) const
+{
+    return Utils::filtered(
+                Utils::transform<Tasks>(indexes, [this](const QModelIndex &i) { return task(i); }),
+                [](const Task &t) { return !t.isNull(); });
+}
+
 QList<Utils::Id> TaskModel::categoryIds() const
 {
     QList<Utils::Id> categories = m_categories.keys();
@@ -360,6 +368,12 @@ void TaskFilterModel::setFilterIncludesWarnings(bool b)
     invalidateFilter();
 }
 
+Tasks TaskFilterModel::tasks(const QModelIndexList &indexes) const
+{
+    return taskModel()->tasks(Utils::transform(indexes, [this](const QModelIndex &i) {
+        return mapToSource(i); }));
+}
+
 int TaskFilterModel::issuesCount(int startRow, int endRow) const
 {
     int count = 0;

src/plugins/projectexplorer/taskmodel.h

@@ -49,6 +49,7 @@ public:
     int columnCount(const QModelIndex &parent = QModelIndex()) const override;
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
     Task task(const QModelIndex &index) const;
+    Tasks tasks(const QModelIndexList &indexes) const;
 
     QList<Utils::Id> categoryIds() const;
     QString categoryDisplayName(Utils::Id categoryId) const;
@@ -142,6 +143,7 @@ public:
     void setFilteredCategories(const QList<Utils::Id> &categoryIds) { m_categoryIds = categoryIds; invalidateFilter(); }
 
     Task task(const QModelIndex &index) const { return taskModel()->task(mapToSource(index)); }
+    Tasks tasks(const QModelIndexList &indexes) const;
     int issuesCount(int startRow, int endRow) const;
 
     bool hasFile(const QModelIndex &index) const

src/plugins/projectexplorer/taskwindow.cpp

@@ -67,7 +67,7 @@ namespace ProjectExplorer {
 
 static QList<ITaskHandler *> g_taskHandlers;
 
-ITaskHandler::ITaskHandler()
+ITaskHandler::ITaskHandler(bool isMultiHandler) : m_isMultiHandler(isMultiHandler)
 {
     g_taskHandlers.append(this);
 }
@@ -77,6 +77,30 @@ ITaskHandler::~ITaskHandler()
     g_taskHandlers.removeOne(this);
 }
 
+void ITaskHandler::handle(const Task &task)
+{
+    QTC_ASSERT(m_isMultiHandler, return);
+    handle(Tasks{task});
+}
+
+void ITaskHandler::handle(const Tasks &tasks)
+{
+    QTC_ASSERT(canHandle(tasks), return);
+    QTC_ASSERT(!m_isMultiHandler, return);
+    handle(tasks.first());
+}
+
+bool ITaskHandler::canHandle(const Tasks &tasks) const
+{
+    if (tasks.isEmpty())
+        return false;
+    if (m_isMultiHandler)
+        return true;
+    if (tasks.size() > 1)
+        return false;
+    return canHandle(tasks.first());
+}
+
 namespace Internal {
 
 class TaskView : public Utils::ListView
@@ -322,7 +346,7 @@ TaskWindow::TaskWindow() : d(std::make_unique<TaskWindowPrivate>())
     d->m_listview->setModel(d->m_filter);
     d->m_listview->setFrameStyle(QFrame::NoFrame);
     d->m_listview->setWindowTitle(displayName());
-    d->m_listview->setSelectionMode(QAbstractItemView::SingleSelection);
+    d->m_listview->setSelectionMode(QAbstractItemView::ExtendedSelection);
     auto *tld = new Internal::TaskDelegate(this);
     d->m_listview->setItemDelegate(tld);
     d->m_listview->setWindowIcon(Icons::WINDOW.icon());
@@ -336,11 +360,18 @@ TaskWindow::TaskWindow() : d(std::make_unique<TaskWindowPrivate>())
 
     connect(d->m_listview->selectionModel(), &QItemSelectionModel::currentChanged,
             tld, &TaskDelegate::currentChanged);
-
     connect(d->m_listview->selectionModel(), &QItemSelectionModel::currentChanged,
-            this, &TaskWindow::currentChanged);
+            this, [this](const QModelIndex &index) { d->m_listview->scrollTo(index); });
     connect(d->m_listview, &QAbstractItemView::activated,
             this, &TaskWindow::triggerDefaultHandler);
+    connect(d->m_listview->selectionModel(), &QItemSelectionModel::selectionChanged,
+            this, [this] {
+        const Tasks tasks = d->m_filter->tasks(d->m_listview->selectionModel()->selectedIndexes());
+        for (QAction * const action : qAsConst(d->m_actions)) {
+            ITaskHandler * const h = d->handler(action);
+            action->setEnabled(h && h->canHandle(tasks));
+        }
+    });
 
     d->m_contextMenu = new QMenu(d->m_listview);
 
@@ -417,6 +448,7 @@ void TaskWindow::delayedInitialization()
             d->m_defaultHandler = h;
 
         QAction *action = h->createAction(this);
+        action->setEnabled(false);
         QTC_ASSERT(action, continue);
         d->m_actionToHandlerMap.insert(action, h);
         connect(action, &QAction::triggered, this, &TaskWindow::actionTriggered);
@@ -430,9 +462,6 @@ void TaskWindow::delayedInitialization()
         }
         d->m_listview->addAction(action);
     }
-
-    // Disable everything for now:
-    currentChanged(QModelIndex());
 }
 
 QList<QWidget*> TaskWindow::toolBarWidgets() const
@@ -468,16 +497,6 @@ void TaskWindow::setCategoryVisibility(Utils::Id categoryId, bool visible)
     d->m_filter->setFilteredCategories(categories);
 }
 
-void TaskWindow::currentChanged(const QModelIndex &index)
-{
-    const Task task = index.isValid() ? d->m_filter->task(index) : Task();
-    foreach (QAction *action, d->m_actions) {
-        ITaskHandler *h = d->handler(action);
-        action->setEnabled((task.isNull() || !h) ? false : h->canHandle(task));
-    }
-    d->m_listview->scrollTo(index);
-}
-
 void TaskWindow::saveSettings()
 {
     QStringList categories = Utils::transform(d->m_filter->filteredCategories(), &Utils::Id::toString);
@@ -605,12 +624,7 @@ void TaskWindow::actionTriggered()
     if (!h)
         return;
 
-    QModelIndex index = d->m_listview->selectionModel()->currentIndex();
-    Task task = d->m_filter->task(index);
-    if (task.isNull())
-        return;
-
-    h->handle(task);
+    h->handle(d->m_filter->tasks(d->m_listview->selectionModel()->selectedIndexes()));
 }
 
 void TaskWindow::setShowWarnings(bool show)
@@ -774,11 +788,11 @@ QSize TaskDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelInd
     initStyleOption(&opt, index);
 
     auto view = qobject_cast<const QAbstractItemView *>(opt.widget);
-    const bool selected = (view->selectionModel()->currentIndex() == index);
+    const bool current = view->selectionModel()->currentIndex() == index;
     QSize s;
     s.setWidth(option.rect.width());
 
-    if (!selected && option.font == m_cachedFont && m_cachedHeight > 0) {
+    if (!current && option.font == m_cachedFont && m_cachedHeight > 0) {
         s.setHeight(m_cachedHeight);
         return s;
     }
@@ -790,7 +804,7 @@ QSize TaskDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelInd
     auto model = static_cast<TaskFilterModel *>(view->model())->taskModel();
     Positions positions(option, model);
 
-    if (selected) {
+    if (current) {
         QString description = index.data(TaskModel::Description).toString();
         // Layout the description
         int leading = fontLeading;
@@ -817,7 +831,7 @@ QSize TaskDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelInd
     if (s.height() < Positions::minimumHeight())
         s.setHeight(Positions::minimumHeight());
 
-    if (!selected) {
+    if (!current) {
         m_cachedHeight = s.height();
         m_cachedFont = option.font;
     }
@@ -856,7 +870,8 @@ void TaskDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
     QColor textColor;
 
     auto view = qobject_cast<const QAbstractItemView *>(opt.widget);
-    bool selected = view->selectionModel()->currentIndex() == index;
+    const bool selected = view->selectionModel()->isSelected(index);
+    const bool current = view->selectionModel()->currentIndex() == index;
 
     if (selected) {
         painter->setBrush(opt.palette.highlight().color());
@@ -885,7 +900,7 @@ void TaskDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                         icon.pixmap(Positions::taskIconWidth(), Positions::taskIconHeight()));
 
     // Paint TextArea:
-    if (!selected) {
+    if (!current) {
         // in small mode we lay out differently
         QString bottom = index.data(TaskModel::Description).toString().split(QLatin1Char('\n')).first();
         painter->setClipRect(positions.textArea());
@@ -908,7 +923,7 @@ void TaskDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
         QTextLayout tl(description);
         QVector<QTextLayout::FormatRange> formats = index.data(TaskModel::Task_t).value<Task>().formats;
         for (QTextLayout::FormatRange &format : formats)
-            format.format.setForeground(opt.palette.highlightedText());
+            format.format.setForeground(textColor);
         tl.setFormats(formats);
         tl.beginLayout();
         while (true) {

src/plugins/projectexplorer/taskwindow.h

@@ -91,7 +91,6 @@ private:
     void openTask(const Task &task);
     void clearTasks(Utils::Id categoryId);
     void setCategoryVisibility(Utils::Id categoryId, bool visible);
-    void currentChanged(const QModelIndex &index);
     void saveSettings();
     void loadSettings();