LibGUI: Make descendants of AbstractView define their own select_all() (#1201)

AbstractView does not know which column it's displaying which makes it
impossible to implement the select_all functionality up there. Now
descendants override the pure virtual select_all method and implement
it themselves.

Libraries/LibGUI/AbstractTableView.cpp

@@ -48,6 +48,15 @@ AbstractTableView::~AbstractTableView()
 {
 }
 
+void AbstractTableView::select_all()
+{
+    selection().clear();
+    for (int item_index = 0; item_index < item_count(); ++item_index) {
+        auto index = model()->index(item_index);
+        selection().add(index);
+    }
+}
+
 void AbstractTableView::update_column_sizes()
 {
     if (!m_size_columns_to_fit_content)

Libraries/LibGUI/AbstractTableView.h

@@ -70,6 +70,7 @@ public:
     virtual ModelIndex index_at_event_position(const Gfx::Point&, bool& is_toggle) const;
     virtual ModelIndex index_at_event_position(const Gfx::Point&) const override;
 
+    virtual void select_all() override;
 protected:
     virtual ~AbstractTableView() override;
     AbstractTableView();

Libraries/LibGUI/AbstractView.cpp

@@ -125,18 +125,6 @@ void AbstractView::stop_editing()
     }
 }
 
-void AbstractView::select_all()
-{
-    ASSERT(model());
-    int rows = model()->row_count();
-    int columns = model()->column_count();
-
-    for (int i = 0; i < rows; ++i) {
-        for (int j = 0; j < columns; ++j)
-            selection().add(model()->index(i, j));
-    }
-}
-
 void AbstractView::activate(const ModelIndex& index)
 {
     if (on_activation)

Libraries/LibGUI/AbstractView.h

@@ -43,7 +43,7 @@ public:
 
     ModelSelection& selection() { return m_selection; }
     const ModelSelection& selection() const { return m_selection; }
-    void select_all();
+    virtual void select_all() = 0;
 
     bool is_editable() const { return m_editable; }
     void set_editable(bool editable) { m_editable = editable; }

Libraries/LibGUI/ColumnsView.cpp

@@ -29,7 +29,6 @@
 #include <LibGUI/Painter.h>
 #include <LibGUI/ScrollBar.h>
 #include <LibGfx/CharacterBitmap.h>
-#include <LibGfx/Palette.h>
 
 namespace GUI {
 
@@ -59,6 +58,28 @@ ColumnsView::~ColumnsView()
 {
 }
 
+void ColumnsView::select_all()
+{
+    Vector<Column> columns_for_selection;
+    selection().for_each_index([&](auto& index) {
+        for (auto& column : m_columns) {
+            if (column.parent_index == index.parent()) {
+                columns_for_selection.append(column);
+                return;
+            }
+        }
+        ASSERT_NOT_REACHED();
+    });
+
+    for (Column& column : columns_for_selection) {
+        int row_count = model()->row_count(column.parent_index);
+        for (int row = 0; row < row_count; row++) {
+            ModelIndex index = model()->index(row, m_model_column, column.parent_index);
+            selection().add(index);
+        }
+    }
+}
+
 void ColumnsView::paint_event(PaintEvent& event)
 {
     AbstractView::paint_event(event);

Libraries/LibGUI/ColumnsView.h

@@ -55,6 +55,7 @@ private:
     virtual void mousedown_event(MouseEvent& event) override;
     virtual void keydown_event(KeyEvent& event) override;
 
+    virtual void select_all() override;
     struct Column {
         ModelIndex parent_index;
         int width;

Libraries/LibGUI/ItemView.cpp

@@ -48,6 +48,15 @@ ItemView::~ItemView()
 {
 }
 
+void ItemView::select_all()
+{
+    selection().clear();
+    for (int item_index = 0; item_index < item_count(); ++item_index) {
+        auto index = model()->index(item_index, model_column());
+        selection().add(index);
+    }
+}
+
 void ItemView::scroll_into_view(const ModelIndex& index, Orientation orientation)
 {
     ScrollableWidget::scroll_into_view(item_rect(index.row()), orientation);

Libraries/LibGUI/ItemView.h

@@ -47,6 +47,7 @@ public:
 
     virtual ModelIndex index_at_event_position(const Gfx::Point&) const override;
 
+    virtual void select_all() override;
 private:
     ItemView();
 

Libraries/LibGUI/ListView.cpp

@@ -43,6 +43,15 @@ ListView::~ListView()
 {
 }
 
+void ListView::select_all()
+{
+    selection().clear();
+    for (int item_index = 0; item_index < item_count(); ++item_index) {
+        auto index = model()->index(item_index, m_model_column);
+        selection().add(index);
+    }
+}
+
 void ListView::update_content_size()
 {
     if (!model())

Libraries/LibGUI/ListView.h

@@ -52,6 +52,7 @@ public:
     int model_column() const { return m_model_column; }
     void set_model_column(int column) { m_model_column = column; }
 
+    virtual void select_all() override;
 private:
     ListView();