/* _______ __ __ __ ______ __ __ _______ __ __ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ * * Copyright (c) 2004 - 2008 Olof Naess�n and Per Larsson * Copyright (C) 2011-2012 The ManaPlus Developers * * * Per Larsson a.k.a finalman * Olof Naess�n 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; int toBeFocusedIndex = -1; for (unsigned int i = 0, sz = static_cast<unsigned int>( mWidgets.size()); i < sz; ++i) { if (mWidgets[i] == widget) { toBeFocusedIndex = i; break; } } if (toBeFocusedIndex < 0) throw GCN_EXCEPTION("Trying to focus a none existing widget."); Widget *const 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; const int sz = static_cast<int>(mWidgets.size()); for (i = 0; i < sz; ++i) { if (mWidgets[i] == mFocusedWidget) focusedWidget = i; } const int focused = focusedWidget; // i is a counter that ensures that the following loop // won't get stuck in an infinite loop i = sz; do { ++ focusedWidget; if (i == 0) { focusedWidget = -1; break; } -- i; if (focusedWidget >= sz) 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; const int sz = static_cast<int>(mWidgets.size()); for (i = 0; i < sz; ++ i) { if (mWidgets[i] == mFocusedWidget) focusedWidget = i; } const int focused = focusedWidget; // i is a counter that ensures that the following loop // won't get stuck in an infinite loop i = sz; do { -- focusedWidget; if (i == 0) { focusedWidget = -1; break; } -- i; if (focusedWidget <= 0) focusedWidget = sz - 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; for (WidgetIterator 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 *const 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; const int sz = static_cast<int>(mWidgets.size()); for (i = 0; i < sz; ++ i) { if (mWidgets[i] == mFocusedWidget) focusedWidget = i; } const 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 = sz; do { ++ focusedWidget; if (i == 0) { focusedWidget = -1; break; } -- i; if (focusedWidget >= sz) focusedWidget = 0; if (focusedWidget == focused) return; const Widget *const widget = mWidgets.at(focusedWidget); if (widget->isFocusable() && widget->isTabInEnabled() && (!mModalFocusedWidget || widget->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; const int sz = static_cast<int>(mWidgets.size()); for (i = 0; i < sz; ++ i) { if (mWidgets[i] == mFocusedWidget) focusedWidget = i; } const 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 = sz; do { -- focusedWidget; if (i == 0) { focusedWidget = -1; break; } -- i; if (focusedWidget <= 0) focusedWidget = sz - 1; if (focusedWidget == focused) return; const Widget *const widget = mWidgets.at(focusedWidget); if (widget->isFocusable() && widget->isTabInEnabled() && (!mModalFocusedWidget || widget->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 *const 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 *const 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; } }