LocatorFilterEntry: Add Acceptor field

Add also AcceptResult structure, returned by acceptor.
The Acceptor, being a member of LocatorFilterEntry,
is going to be used instead of virtual ILocatorFilter::accept()
method. By default, when no Acceptor is provided, the
locator widget is going to call EditorManager::openEditor()
with a LocatorFilterEntry instance.

Change-Id: Ic9697492738d65fd1331bbd0872bc374285c4e53
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/coreplugin/locator/ilocatorfilter.h

@@ -26,6 +26,14 @@ namespace Internal { class Locator; }
 
 class ILocatorFilter;
 
+class AcceptResult
+{
+public:
+    QString newText;
+    int selectionStart = -1;
+    int selectionLength = 0;
+};
+
 class LocatorFilterEntry
 {
 public:
@@ -77,6 +85,7 @@ public:
         , displayName(name)
     {}
 
+    using Acceptor = std::function<AcceptResult()>;
     /* backpointer to creating filter */
     ILocatorFilter *filter = nullptr;
     /* displayed string */
@@ -87,8 +96,12 @@ public:
     QString extraInfo;
     /* additional tooltip */
     QString toolTip;
+    /* called by locator widget on accept. By default, when acceptor is empty,
+       EditorManager::openEditor(LocatorFilterEntry) will be used instead. */
+    Acceptor acceptor;
     /* can be used by the filter to save more information about the entry */
-    QVariant internalData; // DON'T USE IN NEW CODE, IT'S GOING TO BE REMOVED, SOON...
+    /* Replaced by acceptor - DON'T USE IN NEW CODE, IT'S GOING TO BE REMOVED, SOON... */
+    QVariant internalData;
     /* icon to display along with the entry */
     std::optional<QIcon> displayIcon;
     /* file path, if the entry is related to a file, is used e.g. for resolving a file icon */

src/plugins/coreplugin/locator/locatorwidget.cpp

@@ -10,6 +10,7 @@
 #include "locatorsearchutils.h"
 #include "../actionmanager/actionmanager.h"
 #include "../coreplugintr.h"
+#include "../editormanager/editormanager.h"
 #include "../icore.h"
 #include "../modemanager.h"
 
@@ -1003,18 +1004,22 @@ void LocatorWidget::acceptEntry(int row)
     if (!index.isValid())
         return;
     const LocatorFilterEntry entry = m_locatorModel->data(index, LocatorEntryRole).value<LocatorFilterEntry>();
-    Q_ASSERT(entry.filter != nullptr);
-    QString newText;
-    int selectionStart = -1;
-    int selectionLength = 0;
     QWidget *focusBeforeAccept = QApplication::focusWidget();
-    entry.filter->accept(entry, &newText, &selectionStart, &selectionLength);
+    AcceptResult result;
-    if (newText.isEmpty()) {
+    if (entry.acceptor) {
+        result = entry.acceptor();
+    } else if (entry.filter) {
+        entry.filter->accept(entry, &result.newText, &result.selectionStart,
+                             &result.selectionLength);
+    } else {
+        EditorManager::openEditor(entry);
+    }
+    if (result.newText.isEmpty()) {
         emit hidePopup();
         if (QApplication::focusWidget() == focusBeforeAccept)
             resetFocus(m_previousFocusWidget, isInMainWindow());
     } else {
-        showText(newText, selectionStart, selectionLength);
+        showText(result.newText, result.selectionStart, result.selectionLength);
     }
 }
 

src/plugins/coreplugin/locator/locatorwidget.h

@@ -28,8 +28,7 @@ namespace Internal {
 class LocatorModel;
 class CompletionList;
 
-class LocatorWidget
+class LocatorWidget : public QWidget
-  : public QWidget
 {
     Q_OBJECT