diff options
Diffstat (limited to 'src/gui/focushandler.h')
| -rw-r--r-- | src/gui/focushandler.h | 379 |
1 files changed, 353 insertions, 26 deletions
diff --git a/src/gui/focushandler.h b/src/gui/focushandler.h index 0e07625b7..0131a4c29 100644 --- a/src/gui/focushandler.h +++ b/src/gui/focushandler.h @@ -20,59 +20,311 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson + * + * + * Per Larsson a.k.a finalman + * Olof Naessén a.k.a jansem/yakslem + * + * Visit: http://guichan.sourceforge.net + * + * License: (BSD) + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name of Guichan nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + #ifndef GUI_FOCUSHANDLER_H #define GUI_FOCUSHANDLER_H -#include "gui/base/focushandler.hpp" +#include "gui/focushandler.h" + +#include "events/event.h" #include <list> +#include <vector> #include "localconsts.h" +namespace gcn +{ + class Widget; +} + /** * The focus handler. This focus handler does exactly the same as the Guichan * focus handler, but keeps a stack of modal widgets to be able to handle * multiple modal focus requests. */ -class FocusHandler final : public gcn::FocusHandler +class FocusHandler final { public: - FocusHandler() : - mModalStack() - { } + FocusHandler(); A_DELETE_COPY(FocusHandler) /** - * Sets modal focus to a widget. When there is already a modal widget - * then that widget loses modal focus and will regain it after this - * widget releases his modal focus. - */ - void requestModalFocus(gcn::Widget *widget) override final; + * Requests focus for a widget. Focus will only be granted to a widget + * if it's focusable and if no other widget has modal focus. + * If a widget receives focus a focus event will be sent to the + * focus listeners of the widget. + * + * @param widget The widget to request focus for. + * @see isFocused, Widget::requestFocus + */ + void requestFocus(gcn::Widget* widget); /** - * Releases modal focus of a widget. When this widget had modal focus - * and there are other widgets that had also requested modal focus, - * then modal focus will be transfered to the last of those. - */ - void releaseModalFocus(gcn::Widget *widget) override final; + * Requests modal focus for a widget. Focus will only be granted + * to a widget if it's focusable and if no other widget has modal + * focus. + * + * @param widget The widget to request modal focus for. + * @throws Exception when another widget already has modal focus. + * @see releaseModalFocus, Widget::requestModalFocus + */ + void requestModalFocus(gcn::Widget* widget); /** - * Removes a widget from the focus handler. Also makes sure no dangling - * pointers remain in modal focus stack. - */ - void remove(gcn::Widget *widget) override final; + * Requests modal mouse input focus for a widget. Focus will only + * be granted to a widget if it's focusable and if no other widget + * has modal mouse input focus. + * + * Modal mouse input focus means no other widget then the widget with + * modal mouse input focus will receive mouse input. The widget with + * modal mouse input focus will also receive mouse input no matter what + * the mouse input is or where the mouse input occurs. + * + * @param widget The widget to focus for modal mouse input focus. + * @throws Exception when another widget already has modal mouse input + * focus. + * @see releaseModalMouseInputFocus, Widget::requestModalMouseInputFocus + */ + void requestModalMouseInputFocus(gcn::Widget* widget); /** - * Overloaded to allow windows to move to the top when one of their - * widgets is tabbed to when tabbing through focusable elements. - */ - void tabNext() override final; + * Releases modal focus if the widget has modal focus. + * If the widget doesn't have modal focus no relase will occur. + * + * @param widget The widget to release modal focus for. + * @see reuqestModalFocus, Widget::releaseModalFocus + */ + void releaseModalFocus(gcn::Widget* widget); + + /** + * Releases modal mouse input focus if the widget has modal mouse input + * focus. If the widget doesn't have modal mouse input focus no relase + * will occur. + * + * @param widget the widget to release modal mouse input focus for. + * @see requestModalMouseInputFocus, Widget::releaseModalMouseInputFocus + */ + void releaseModalMouseInputFocus(gcn::Widget* widget); + + /** + * Checks if a widget is focused. + * + * @param widget The widget to check. + * @return True if the widget is focused, false otherwise. + * @see Widget::isFocused + */ + bool isFocused(const gcn::Widget* widget) const; + + /** + * Gets the widget with focus. + * + * @return The widget with focus. NULL if no widget has focus. + */ + gcn::Widget* getFocused() const A_WARN_UNUSED; + + /** + * Gets the widget with modal focus. + * + * @return The widget with modal focus. NULL if no widget has + * modal focus. + */ + gcn::Widget* getModalFocused() const A_WARN_UNUSED; + + /** + * Gets the widget with modal mouse input focus. + * + * @return The widget with modal mouse input focus. NULL if + * no widget has modal mouse input focus. + */ + gcn::Widget* getModalMouseInputFocused() const A_WARN_UNUSED; + + /** + * Focuses the next widget added to a conainer. + * If no widget has focus the first widget gets focus. The order + * in which the widgets are focused is determined by the order + * they were added to a container. + * + * @see focusPrevious + */ + void focusNext(); + + /** + * Focuses the previous widget added to a contaienr. + * If no widget has focus the first widget gets focus. The order + * in which the widgets are focused is determined by the order + * they were added to a container. + * + * @see focusNext + */ + void focusPrevious(); + + /** + * Adds a widget to by handles by the focus handler. + * + * @param widget The widget to add. + * @see remove + */ + void add(gcn::Widget* widget); + + /** + * Removes a widget from the focus handler. + * + * @param widget The widget to remove. + * @see add + */ + void remove(gcn::Widget* widget); + + /** + * Focuses nothing. A focus event will also be sent to the + * focused widget's focus listeners if a widget has focus. + */ + void focusNone(); + + /** + * Focuses the next widget which allows tabbing in unless + * the current focused Widget disallows tabbing out. + * + * @see tabPrevious + */ + void tabNext(); + + /** + * Focuses the previous widget which allows tabbing in unless + * current focused widget disallows tabbing out. + * + * @see tabNext + */ + void tabPrevious(); + + /** + * Gets the widget being dragged. Used by the Gui class to + * keep track of the dragged widget. + * + * @return the widget being dragged. + * @see setDraggedWidget + */ + gcn::Widget* getDraggedWidget() A_WARN_UNUSED; + + /** + * Sets the widget being dragged. Used by the Gui class to + * keep track of the dragged widget. + * + * @param draggedWidget The widget being dragged. + * @see getDraggedWidget + */ + void setDraggedWidget(gcn::Widget* draggedWidget); + + /** + * Gets the last widget with the mouse. Used by the Gui class + * to keep track the last widget with the mouse. + * + * @return The last widget with the mouse. + * @see setLastWidgetWithMouse + */ + gcn::Widget* getLastWidgetWithMouse() A_WARN_UNUSED; + + /** + * Sets the last widget with the mouse. Used by the Gui class + * to keep track the last widget with the mouse. + * + * @param lastWidgetWithMouse The last widget with the mouse. + * @see getLastWidgetWithMouse + */ + void setLastWidgetWithMouse(gcn::Widget* lastWidgetWithMouse); + + /** + * Gets the last widget with modal focus. + * + * @return The last widget with modal focus. + * @see setLastWidgetWithModalFocus + */ + gcn::Widget* getLastWidgetWithModalFocus() A_WARN_UNUSED; + + /** + * Sets the last widget with modal focus. + * + * @param widget The last widget with modal focus. + * @see getLastWidgetWithModalFocus + */ + void setLastWidgetWithModalFocus(gcn::Widget* widget); + + /** + * Gets the last widget with modal mouse input focus. + * + * @return The last widget with modal mouse input focus. + * @see setLastWidgetWithModalMouseInputFocus + */ + gcn::Widget* getLastWidgetWithModalMouseInputFocus() A_WARN_UNUSED; + + /** + * Sets the last widget with modal mouse input focus. + * + * @param widget The last widget with modal mouse input focus. + * @see getLastWidgetWithModalMouseInputFocus + */ + void setLastWidgetWithModalMouseInputFocus(gcn::Widget* widget); - void tabPrevious() override final; + /** + * Gets the last widget pressed. Used by the Gui class to keep track + * of pressed widgets. + * + * @return The last widget pressed. + * @see setLastWidgetPressed + */ + gcn::Widget* getLastWidgetPressed() A_WARN_UNUSED; - void distributeFocusGainedEvent(const Event &focusEvent) - override final; + /** + * Sets the last widget pressed. Used by the Gui class to keep track + * of pressed widgets. + * + * @param lastWidgetPressed The last widget pressed. + * @see getLastWidgetPressed + */ + void setLastWidgetPressed(gcn::Widget* lastWidgetPressed); private: /** @@ -82,6 +334,81 @@ class FocusHandler final : public gcn::FocusHandler void checkForWindow() const; /** + * Distributes a focus lost event. + * + * @param focusEvent the event to distribute. + * @since 0.7.0 + */ + void distributeFocusLostEvent(const Event& focusEvent); + + /** + * Distributes a focus gained event. + * + * @param focusEvent the event to distribute. + * @since 0.7.0 + */ + void distributeFocusGainedEvent(const Event& focusEvent); + + /** + * Typedef. + */ + typedef std::vector<gcn::Widget*> WidgetVector; + + /** + * Typedef. + */ + typedef WidgetVector::iterator WidgetIterator; + + /** + * Holds the widgets currently being handled by the + * focus handler. + */ + WidgetVector mWidgets; + + /** + * Holds the focused widget. NULL if no widget has focus. + */ + gcn::Widget* mFocusedWidget; + + /** + * Holds the modal focused widget. NULL if no widget has + * modal focused. + */ + gcn::Widget* mModalFocusedWidget; + + /** + * Holds the modal mouse input focused widget. NULL if no widget + * is being dragged. + */ + gcn::Widget* mModalMouseInputFocusedWidget; + + /** + * Holds the dragged widget. NULL if no widget is + * being dragged. + */ + gcn::Widget* mDraggedWidget; + + /** + * Holds the last widget with the mouse. + */ + gcn::Widget* mLastWidgetWithMouse; + + /** + * Holds the last widget with modal focus. + */ + gcn::Widget* mLastWidgetWithModalFocus; + + /** + * Holds the last widget with modal mouse input focus. + */ + gcn::Widget* mLastWidgetWithModalMouseInputFocus; + + /** + * Holds the last widget pressed. + */ + gcn::Widget* mLastWidgetPressed; + + /** * Stack of widgets that have requested modal forcus. */ std::list<gcn::Widget*> mModalStack; |