diff -r 000000000000 -r 16d8024aca5e src/hbplugins/inputmethods/hardwareinput/hbhardwareinputprediction12keyhandler.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/hbplugins/inputmethods/hardwareinput/hbhardwareinputprediction12keyhandler.cpp Mon Apr 19 14:02:13 2010 +0300 @@ -0,0 +1,311 @@ +/**************************************************************************** +** +** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (developer.feedback@nokia.com) +** +** This file is part of the HbPlugins module of the UI Extensions for Mobile. +** +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this file. +** Please review the following information to ensure the GNU Lesser General +** Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at developer.feedback@nokia.com. +** +****************************************************************************/ +#include +#include +#include +#include + +#include "hbhardwareinputprediction12keyhandler.h" +#include "hbinputpredictionhandler_p.h" +#include "hbinputabstractbase.h" + +class HbHardwareInputPrediction12KeyHandlerPrivate: public HbInputPredictionHandlerPrivate +{ + Q_DECLARE_PUBLIC(HbHardwareInputPrediction12KeyHandler) + +public: + HbHardwareInputPrediction12KeyHandlerPrivate(); + ~HbHardwareInputPrediction12KeyHandlerPrivate(); + + bool keyReleased(const QKeyEvent *keyEvent); + bool keyPressed(const QKeyEvent *keyEvent); + void _q_timeout(); + +public: + int mLastKey; + bool mButtonDown; + QChar mCurrentChar; +}; + +HbHardwareInputPrediction12KeyHandlerPrivate::HbHardwareInputPrediction12KeyHandlerPrivate() +:mLastKey(0), +mButtonDown(false), +mCurrentChar(0) +{ +} + +HbHardwareInputPrediction12KeyHandlerPrivate::~HbHardwareInputPrediction12KeyHandlerPrivate() +{ +} + +void HbHardwareInputPrediction12KeyHandlerPrivate::_q_timeout() +{ + qDebug("HbHardwareInputPrediction12KeyHandlerPrivate::_q_timeout()"); + Q_Q(HbHardwareInputPrediction12KeyHandler); + + // let's stop the timer first. + mTimer->stop(); + + //Long key press number key is applicable to all keys + if (mButtonDown && mCanContinuePrediction) { + if (mLastKey == Qt::Key_Asterisk) { + q->actionHandler(HbInputModeHandler::HbInputModeActionLaunchCandidatePopup); + } else if (mLastKey == Qt::Key_Shift) { + updateTextCase(); + mInputMethod->switchMode(Qt::Key_Shift); + } else { + q->actionHandler(HbInputModeHandler::HbInputModeActionDeleteAndCommit); + q->commitFirstMappedNumber(mLastKey); + } + } +} + +bool HbHardwareInputPrediction12KeyHandlerPrivate::keyPressed(const QKeyEvent *keyEvent) +{ + Q_Q(HbHardwareInputPrediction12KeyHandler); + HbInputFocusObject *focusObject = 0; + focusObject = mInputMethod->focusObject(); + if (!focusObject) { + return false; + } + + int buttonId = keyEvent->key(); + // A new key has been pressed, so the timer for the previous key is not valid. + if (((mLastKey != buttonId)) && mTimer->isActive()) { + mTimer->stop(); + mInputMethod->updateState(); + } + + if (buttonId == Qt::Key_Return) { + + return true; + } else if (buttonId == Qt::Key_Shift) { + if (mTimer->isActive() && (mLastKey == buttonId)){ + mTimer->stop(); + //Since the mode change should not commit the auto-completed part + //we need to disable the tail. + mShowTail = false; + //This should switch to the numeric mode and with a long key press + //should be back to the prediction mode again. + //mInputMethod->activateNextState(); + mInputMethod->switchMode(Qt::Key_Shift); + } else { + updateTextCase(); + mTimer->start(HbLongPressTimerTimeout); + } + mLastKey = buttonId; + mButtonDown = true; + return true; + } else if(buttonId == Qt::Key_Down) { + q->actionHandler(HbInputModeHandler::HbInputModeActionLaunchCandidatePopup); + return true; + } + + mLastKey = buttonId; + mButtonDown = true; + + // Asterisk key / sym key is handled in this class it self, so not passing it to + // the base mode handlers. + if (buttonId != Qt::Key_Asterisk) { + q->HbInputPredictionHandler::filterEvent(keyEvent); + } + + // custom button should not start timer. + if ((buttonId & CUSTOM_INPUT_MASK) != CUSTOM_INPUT_MASK) { + mTimer->start(HbLongPressTimerTimeout); + } + + return true; +} + +/*! +Handles the key release events from the VKB. Launches the SCT with key release event of +asterisk. +*/ +bool HbHardwareInputPrediction12KeyHandlerPrivate::keyReleased(const QKeyEvent *keyEvent) +{ + Q_Q(HbHardwareInputPrediction12KeyHandler); + // since button is released we can set buttonDown back to false. + mButtonDown = false; + + if (keyEvent->key() == Qt::Key_Asterisk) { + //Same asterisk key is used for launching candidate list (long key press) + //and also for SCT. So, do not launch SCT if candidate list is already launched. + mInputMethod->switchMode(Qt::Key_Asterisk); + return true; + } else if (keyEvent->key() == Qt::Key_Delete) { + QKeyEvent keyEvent(QEvent::KeyRelease, Qt::Key_Backspace, Qt::NoModifier); + q->sendAndUpdate(keyEvent); + return true; + } + + return false; +} + + +HbHardwareInputPrediction12KeyHandler::HbHardwareInputPrediction12KeyHandler(HbInputAbstractMethod *inputMethod) +:HbInputPredictionHandler(* new HbHardwareInputPrediction12KeyHandlerPrivate, inputMethod) +{ + Q_D(HbHardwareInputPrediction12KeyHandler); + d->q_ptr = this; +} + +HbHardwareInputPrediction12KeyHandler::~HbHardwareInputPrediction12KeyHandler() +{ +} + +/*! +this function lists different modes. +*/ +void HbHardwareInputPrediction12KeyHandler::listInputModes(QVector& modes) const +{ + Q_UNUSED(modes); + /*HbInputMode binding; + binding.iMode = HbInputModeLatinPredictive; + binding.iKeyboard = HbKeyboard12Key; + QVector languages; + HbKeyMapFactory::instance()->listLanguages(languages); + + const QVector* engineLanguages = supportedLanguages(); + if (engineLanguages) { + binding.iMode = HbInputModeLatinPredictive; + foreach (const HbInputLanguage& languageCode, *engineLanguages) { + if (languages.contains(languageCode.language())) { + binding.iLanguage = languageCode; + modes.push_back(binding); + } + } + }*/ +} + +/*! +filterEvent to handler keypress/release events. +*/ +bool HbHardwareInputPrediction12KeyHandler::filterEvent(const QKeyEvent * event) +{ + Q_D(HbHardwareInputPrediction12KeyHandler); + + HbInputFocusObject *focusObject = 0; + focusObject = d->mInputMethod->focusObject(); + + //If there was a handling for empty candidate-list, i.e. the engine did not predict + //any meaningful word for the input sequence. + if(!d->mCanContinuePrediction) { + int eventKey = event->key(); + switch(eventKey) { + case Qt::Key_0: + case Qt::Key_Asterisk: + case Qt::Key_Space: { + if(d->mCandidates->size() && focusObject) { + //Remove the "?" mark + (*d->mCandidates)[d->mBestGuessLocation].chop(1); + d->updateEditor(); + d->mCanContinuePrediction = true; + } + } + break; + case Qt::Key_Shift: { + if(event->type() == QEvent::KeyRelease) { + //Remove the "?" mark + deleteOneCharacter(); + } + } + //For the following set of keys, it does not matter. + case Qt::Key_Backspace: + case Qt::Key_Delete: + case Qt::Key_Return: + case Qt::Key_Enter: { + } + break; + //The default behavior for any other key press is just to consume the key event and + //not to do anything. + default: { + return true; + } + break; + } + } + + // prediction mode can't handle Qt::Key_0, so we will emit a passFilterEvent + // this signal must be connected to by the plugin to a modehandler. + // which can handle it. + if (event->key() == Qt::Key_0) { + // if this previous key is not Qt::Key_0, we must commit it. + if (d->mLastKey != Qt::Key_0) { + actionHandler(HbInputModeHandler::HbInputModeActionCommit); + } + emit passFilterEvent(event); + d->mLastKey = Qt::Key_0; + return true; + } else { + if (d->mLastKey == Qt::Key_0) { + emit passActionHandler(HbInputModeActionCommit); + } + if (event->isAutoRepeat()) { + // Ignore all repeat events after first repeat event + return true; + } else if (event->type() == QEvent::KeyRelease) { + return d->keyReleased(event); + } else { + return d->keyPressed(event); + } + } +} + +/*! +Action handler +*/ +bool HbHardwareInputPrediction12KeyHandler::actionHandler(HbInputModeAction action) +{ + Q_D(HbHardwareInputPrediction12KeyHandler); + bool ret = true; + switch (action) { +case HbInputModeActionReset: + HbInputPredictionHandler::actionHandler(HbInputModeActionReset); + d->mTimer->stop(); + break; +case HbInputModeActionFocusRecieved: + HbInputPredictionHandler::actionHandler(HbInputModeActionSetCandidateList); + HbInputPredictionHandler::actionHandler(HbInputModeActionSetKeypad); + d->mTimer->stop(); + break; +default: + ret = HbInputPredictionHandler::actionHandler(action); + break; + } + + return ret; +} + +/*! +Returns true if preidciton engine is available and initialized. +*/ +bool HbHardwareInputPrediction12KeyHandler::isActive() const +{ + Q_D(const HbHardwareInputPrediction12KeyHandler); + return d->mEngine != 0; +} + +//EOF