8e4751a963
This is really just a workaround to keep SystemMonitor's process table working right wrt selection retention during resorts (while also doing full index invalidation on things like ProfileViewer inversion.) It's starting to feel like the model abstraction is not super great and we'll need a better approach if we want to actually build some more dynamic functionality into our views.
110 lines
4.1 KiB
C++
110 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Function.h>
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#include <LibGUI/ModelSelection.h>
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#include <LibGUI/ScrollableWidget.h>
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namespace GUI {
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class AbstractView : public ScrollableWidget {
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C_OBJECT_ABSTRACT(AbstractView)
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friend class Model;
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public:
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void set_model(RefPtr<Model>);
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Model* model() { return m_model.ptr(); }
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const Model* model() const { return m_model.ptr(); }
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ModelSelection& selection() { return m_selection; }
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const ModelSelection& selection() const { return m_selection; }
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virtual void select_all() = 0;
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bool is_editable() const { return m_editable; }
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void set_editable(bool editable) { m_editable = editable; }
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virtual bool accepts_focus() const override { return true; }
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virtual void did_update_model(unsigned flags);
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virtual void did_update_selection();
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virtual Gfx::Rect content_rect(const ModelIndex&) const { return {}; }
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virtual ModelIndex index_at_event_position(const Gfx::Point&) const = 0;
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void begin_editing(const ModelIndex&);
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void stop_editing();
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void set_activates_on_selection(bool b) { m_activates_on_selection = b; }
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bool activates_on_selection() const { return m_activates_on_selection; }
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Function<void()> on_selection_change;
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Function<void(const ModelIndex&)> on_activation;
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Function<void(const ModelIndex&)> on_selection;
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Function<void(const ModelIndex&, const ContextMenuEvent&)> on_context_menu_request;
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Function<void(const ModelIndex&, const DropEvent&)> on_drop;
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Function<OwnPtr<ModelEditingDelegate>(const ModelIndex&)> aid_create_editing_delegate;
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void notify_selection_changed(Badge<ModelSelection>);
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NonnullRefPtr<Gfx::Font> font_for_index(const ModelIndex&) const;
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protected:
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AbstractView();
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virtual ~AbstractView() override;
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virtual void mousedown_event(MouseEvent&) override;
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virtual void mousemove_event(MouseEvent&) override;
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virtual void mouseup_event(MouseEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void context_menu_event(ContextMenuEvent&) override;
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virtual void drop_event(DropEvent&) override;
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virtual void leave_event(Core::Event&) override;
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virtual void did_scroll() override;
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void set_hovered_index(const ModelIndex&);
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void activate(const ModelIndex&);
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void activate_selected();
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void update_edit_widget_position();
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bool m_editable { false };
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ModelIndex m_edit_index;
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RefPtr<Widget> m_edit_widget;
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Gfx::Rect m_edit_widget_content_rect;
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Gfx::Point m_left_mousedown_position;
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bool m_might_drag { false };
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ModelIndex m_hovered_index;
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private:
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RefPtr<Model> m_model;
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OwnPtr<ModelEditingDelegate> m_editing_delegate;
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ModelSelection m_selection;
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bool m_activates_on_selection { false };
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};
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}
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