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LibGUI+WindowServer: Add app-global keyboard shortcuts.

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This patch adds a GShortcut class. Each GAction can have a GShortcut which
will cause the event loop to listen for that key combination app-globally
and activate the event in case it's pressed.

The shortcut will also be displayed when the action is added to a menu.

Use this to hook up Alt+Up with the "open parent directory" action in the
FileManager app. :^)
This commit is contained in:
Andreas Kling 2019-03-02 10:04:49 +01:00
parent 5c0fca0a95
commit 596a5ce5a4
17 changed files with 263 additions and 17 deletions
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12
LibGUI/GAction.cpp
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@ -1,4 +1,5 @@
#include <LibGUI/GAction.h>
#include <LibGUI/GEventLoop.h>
GAction::GAction(const String& text, const String& custom_data, Function<void(const GAction&)> on_activation_callback)
: on_activation(move(on_activation_callback))
@ -19,8 +20,19 @@ GAction::GAction(const String& text, RetainPtr<GraphicsBitmap>&& icon, Function<
{
}
GAction::GAction(const String& text, const GShortcut& shortcut, RetainPtr<GraphicsBitmap>&& icon, Function<void(const GAction&)> on_activation_callback)
: on_activation(move(on_activation_callback))
, m_text(text)
, m_icon(move(icon))
, m_shortcut(shortcut)
{
GEventLoop::register_action_with_shortcut(Badge<GAction>(), *this);
}
GAction::~GAction()
{
if (m_shortcut.is_valid())
GEventLoop::unregister_action_with_shortcut(Badge<GAction>(), *this);
}
void GAction::activate()