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-/* _______ __ __ __ ______ __ __ _______ __ __
- * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
- * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
- * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
- * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
- * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
- * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
- *
- * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
- * Copyright (C) 2011-2012 The ManaPlus Developers
- *
- *
- * 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.
- */
-
-/*
- * For comments regarding functions please see the header file.
- */
-
-#include "guichan/focushandler.hpp"
-
-#include "guichan/focuslistener.hpp"
-#include "guichan/exception.hpp"
-#include "guichan/widget.hpp"
-
-#include "debug.h"
-
-namespace gcn
-{
- FocusHandler::FocusHandler() :
- mFocusedWidget(nullptr),
- mModalFocusedWidget(nullptr),
- mModalMouseInputFocusedWidget(nullptr),
- mDraggedWidget(nullptr),
- mLastWidgetWithMouse(nullptr),
- mLastWidgetWithModalFocus(nullptr),
- mLastWidgetWithModalMouseInputFocus(nullptr),
- mLastWidgetPressed(nullptr)
- {
- }
-
- void FocusHandler::requestFocus(Widget* widget)
- {
- if (!widget || widget == mFocusedWidget)
- return;
-
- unsigned int i = 0;
- int toBeFocusedIndex = -1;
- for (i = 0; i < mWidgets.size(); ++i)
- {
- if (mWidgets[i] == widget)
- {
- toBeFocusedIndex = i;
- break;
- }
- }
-
- if (toBeFocusedIndex < 0)
- throw GCN_EXCEPTION("Trying to focus a none existing widget.");
-
- Widget *oldFocused = mFocusedWidget;
-
- if (oldFocused != widget)
- {
- mFocusedWidget = mWidgets.at(toBeFocusedIndex);
-
- if (oldFocused)
- {
- Event focusEvent(oldFocused);
- distributeFocusLostEvent(focusEvent);
- }
-
- Event focusEvent(mWidgets.at(toBeFocusedIndex));
- distributeFocusGainedEvent(focusEvent);
- }
- }
-
- void FocusHandler::requestModalFocus(Widget* widget)
- {
- if (mModalFocusedWidget && mModalFocusedWidget != widget)
- throw GCN_EXCEPTION("Another widget already has modal focus.");
-
- mModalFocusedWidget = widget;
-
- if (mFocusedWidget && !mFocusedWidget->isModalFocused())
- focusNone();
- }
-
- void FocusHandler::requestModalMouseInputFocus(Widget* widget)
- {
- if (mModalMouseInputFocusedWidget
- && mModalMouseInputFocusedWidget != widget)
- {
- throw GCN_EXCEPTION("Another widget already has "
- "modal input focus.");
- }
-
- mModalMouseInputFocusedWidget = widget;
- }
-
- void FocusHandler::releaseModalFocus(Widget* widget)
- {
- if (mModalFocusedWidget == widget)
- mModalFocusedWidget = nullptr;
- }
-
- void FocusHandler::releaseModalMouseInputFocus(Widget* widget)
- {
- if (mModalMouseInputFocusedWidget == widget)
- mModalMouseInputFocusedWidget = nullptr;
- }
-
- Widget* FocusHandler::getFocused() const
- {
- return mFocusedWidget;
- }
-
- Widget* FocusHandler::getModalFocused() const
- {
- return mModalFocusedWidget;
- }
-
- Widget* FocusHandler::getModalMouseInputFocused() const
- {
- return mModalMouseInputFocusedWidget;
- }
-
- void FocusHandler::focusNext()
- {
- int i;
- int focusedWidget = -1;
- for (i = 0; i < static_cast<int>(mWidgets.size()); ++i)
- {
- if (mWidgets[i] == mFocusedWidget)
- focusedWidget = i;
- }
- int focused = focusedWidget;
-
- // i is a counter that ensures that the following loop
- // won't get stuck in an infinite loop
- i = static_cast<int>(mWidgets.size());
- do
- {
- ++ focusedWidget;
-
- if (i == 0)
- {
- focusedWidget = -1;
- break;
- }
-
- -- i;
-
- if (focusedWidget >= static_cast<int>(mWidgets.size()))
- focusedWidget = 0;
-
- if (focusedWidget == focused)
- return;
- }
- while (!mWidgets.at(focusedWidget)->isFocusable());
-
- if (focusedWidget >= 0)
- {
- mFocusedWidget = mWidgets.at(focusedWidget);
-
- Event focusEvent(mFocusedWidget);
- distributeFocusGainedEvent(focusEvent);
- }
-
- if (focused >= 0)
- {
- Event focusEvent(mWidgets.at(focused));
- distributeFocusLostEvent(focusEvent);
- }
- }
-
- void FocusHandler::focusPrevious()
- {
- if (mWidgets.empty())
- {
- mFocusedWidget = nullptr;
- return;
- }
-
- int i;
- int focusedWidget = -1;
- for (i = 0; i < static_cast<int>(mWidgets.size()); ++ i)
- {
- if (mWidgets[i] == mFocusedWidget)
- focusedWidget = i;
- }
- int focused = focusedWidget;
-
- // i is a counter that ensures that the following loop
- // won't get stuck in an infinite loop
- i = static_cast<int>(mWidgets.size());
- do
- {
- -- focusedWidget;
-
- if (i == 0)
- {
- focusedWidget = -1;
- break;
- }
-
- -- i;
-
- if (focusedWidget <= 0)
- focusedWidget = mWidgets.size() - 1;
-
- if (focusedWidget == focused)
- return;
- }
- while (!mWidgets.at(focusedWidget)->isFocusable());
-
- if (focusedWidget >= 0)
- {
- mFocusedWidget = mWidgets.at(focusedWidget);
- Event focusEvent(mFocusedWidget);
- distributeFocusGainedEvent(focusEvent);
- }
-
- if (focused >= 0)
- {
- Event focusEvent(mWidgets.at(focused));
- distributeFocusLostEvent(focusEvent);
- }
- }
-
- bool FocusHandler::isFocused(const Widget* widget) const
- {
- return mFocusedWidget == widget;
- }
-
- void FocusHandler::add(Widget* widget)
- {
- mWidgets.push_back(widget);
- }
-
- void FocusHandler::remove(Widget* widget)
- {
- if (isFocused(widget))
- mFocusedWidget = nullptr;
-
- WidgetIterator iter;
-
- for (iter = mWidgets.begin(); iter != mWidgets.end(); ++iter)
- {
- if ((*iter) == widget)
- {
- mWidgets.erase(iter);
- break;
- }
- }
-
- if (mDraggedWidget == widget)
- {
- mDraggedWidget = nullptr;
- return;
- }
-
- if (mLastWidgetWithMouse == widget)
- {
- mLastWidgetWithMouse = nullptr;
- return;
- }
-
- if (mLastWidgetWithModalFocus == widget)
- {
- mLastWidgetWithModalFocus = nullptr;
- return;
- }
-
- if (mLastWidgetWithModalMouseInputFocus == widget)
- {
- mLastWidgetWithModalMouseInputFocus = nullptr;
- return;
- }
-
- if (mLastWidgetPressed == widget)
- {
- mLastWidgetPressed = nullptr;
- return;
- }
- }
-
- void FocusHandler::focusNone()
- {
- if (mFocusedWidget)
- {
- Widget* focused = mFocusedWidget;
- mFocusedWidget = nullptr;
-
- Event focusEvent(focused);
- distributeFocusLostEvent(focusEvent);
- }
- }
-
- void FocusHandler::tabNext()
- {
- if (mFocusedWidget)
- {
- if (!mFocusedWidget->isTabOutEnabled())
- return;
- }
-
- if (mWidgets.empty())
- {
- mFocusedWidget = nullptr;
- return;
- }
-
- int i;
- int focusedWidget = -1;
- for (i = 0; i < static_cast<int>(mWidgets.size()); ++ i)
- {
- if (mWidgets[i] == mFocusedWidget)
- focusedWidget = i;
- }
- int focused = focusedWidget;
- bool done = false;
-
- // i is a counter that ensures that the following loop
- // won't get stuck in an infinite loop
- i = static_cast<int>(mWidgets.size());
- do
- {
- ++ focusedWidget;
-
- if (i == 0)
- {
- focusedWidget = -1;
- break;
- }
-
- -- i;
-
- if (focusedWidget >= static_cast<int>(mWidgets.size()))
- focusedWidget = 0;
-
- if (focusedWidget == focused)
- return;
-
- if (mWidgets.at(focusedWidget)->isFocusable() &&
- mWidgets.at(focusedWidget)->isTabInEnabled() &&
- (!mModalFocusedWidget ||
- mWidgets.at(focusedWidget)->isModalFocused()))
- {
- done = true;
- }
- }
- while (!done);
-
- if (focusedWidget >= 0)
- {
- mFocusedWidget = mWidgets.at(focusedWidget);
- Event focusEvent(mFocusedWidget);
- distributeFocusGainedEvent(focusEvent);
- }
-
- if (focused >= 0)
- {
- Event focusEvent(mWidgets.at(focused));
- distributeFocusLostEvent(focusEvent);
- }
- }
-
- void FocusHandler::tabPrevious()
- {
- if (mFocusedWidget)
- {
- if (!mFocusedWidget->isTabOutEnabled())
- return;
- }
-
- if (mWidgets.empty())
- {
- mFocusedWidget = nullptr;
- return;
- }
-
- int i;
- int focusedWidget = -1;
- for (i = 0; i < static_cast<int>(mWidgets.size()); ++ i)
- {
- if (mWidgets[i] == mFocusedWidget)
- focusedWidget = i;
- }
- int focused = focusedWidget;
- bool done = false;
-
- // i is a counter that ensures that the following loop
- // won't get stuck in an infinite loop
- i = static_cast<int>(mWidgets.size());
- do
- {
- -- focusedWidget;
-
- if (i == 0)
- {
- focusedWidget = -1;
- break;
- }
-
- -- i;
-
- if (focusedWidget <= 0)
- focusedWidget = mWidgets.size() - 1;
-
- if (focusedWidget == focused)
- return;
-
- if (mWidgets.at(focusedWidget)->isFocusable() &&
- mWidgets.at(focusedWidget)->isTabInEnabled() &&
- (!mModalFocusedWidget ||
- mWidgets.at(focusedWidget)->isModalFocused()))
- {
- done = true;
- }
- }
- while (!done);
-
- if (focusedWidget >= 0)
- {
- mFocusedWidget = mWidgets.at(focusedWidget);
- Event focusEvent(mFocusedWidget);
- distributeFocusGainedEvent(focusEvent);
- }
-
- if (focused >= 0)
- {
- Event focusEvent(mWidgets.at(focused));
- distributeFocusLostEvent(focusEvent);
- }
- }
-
- void FocusHandler::distributeFocusLostEvent(const Event& focusEvent)
- {
- Widget* sourceWidget = focusEvent.getSource();
-
- std::list<FocusListener*> focusListeners
- = sourceWidget->_getFocusListeners();
-
- // Send the event to all focus listeners of the widget.
- for (std::list<FocusListener*>::const_iterator
- it = focusListeners.begin();
- it != focusListeners.end();
- ++ it)
- {
- (*it)->focusLost(focusEvent);
- }
- }
-
- void FocusHandler::distributeFocusGainedEvent(const Event& focusEvent)
- {
- Widget* sourceWidget = focusEvent.getSource();
-
- std::list<FocusListener*> focusListeners
- = sourceWidget->_getFocusListeners();
-
- // Send the event to all focus listeners of the widget.
- for (std::list<FocusListener*>::const_iterator
- it = focusListeners.begin();
- it != focusListeners.end();
- ++ it)
- {
- (*it)->focusGained(focusEvent);
- }
- }
-
- Widget* FocusHandler::getDraggedWidget()
- {
- return mDraggedWidget;
- }
-
- void FocusHandler::setDraggedWidget(Widget* draggedWidget)
- {
- mDraggedWidget = draggedWidget;
- }
-
- Widget* FocusHandler::getLastWidgetWithMouse()
- {
- return mLastWidgetWithMouse;
- }
-
- void FocusHandler::setLastWidgetWithMouse(Widget* lastWidgetWithMouse)
- {
- mLastWidgetWithMouse = lastWidgetWithMouse;
- }
-
- Widget* FocusHandler::getLastWidgetWithModalFocus()
- {
- return mLastWidgetWithModalFocus;
- }
-
- void FocusHandler::setLastWidgetWithModalFocus(Widget* widget)
- {
- mLastWidgetWithModalFocus = widget;
- }
-
- Widget* FocusHandler::getLastWidgetWithModalMouseInputFocus()
- {
- return mLastWidgetWithModalMouseInputFocus;
- }
-
- void FocusHandler::setLastWidgetWithModalMouseInputFocus(Widget* widget)
- {
- mLastWidgetWithModalMouseInputFocus = widget;
- }
-
- Widget* FocusHandler::getLastWidgetPressed()
- {
- return mLastWidgetPressed;
- }
-
- void FocusHandler::setLastWidgetPressed(Widget* lastWidgetPressed)
- {
- mLastWidgetPressed = lastWidgetPressed;
- }
-}
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