/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qlineedit.h"+
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#include "qlineedit_p.h"+
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+
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#ifndef QT_NO_LINEEDIT+
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+
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#include "qabstractitemview.h"+
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#include "qclipboard.h"+
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#ifndef QT_NO_ACCESSIBILITY+
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#include "qaccessible.h"+
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#endif+
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#ifndef QT_NO_IM+
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#include "qinputcontext.h"+
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#include "qlist.h"+
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#endif+
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+
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QT_BEGIN_NAMESPACE+
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+
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const int QLineEditPrivate::verticalMargin(1);+
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const int QLineEditPrivate::horizontalMargin(2);+
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+
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int QLineEditPrivate::xToPos(int x, QTextLine::CursorPosition betweenOrOn) const+
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{+
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    QRect cr = adjustedContentsRect();+
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    x-= cr.x() - hscroll + horizontalMargin;+
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    return control->xToPos(x, betweenOrOn);+
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}+
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+
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QRect QLineEditPrivate::cursorRect() const+
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{+
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    QRect cr = adjustedContentsRect();+
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    int cix = cr.x() - hscroll + horizontalMargin;+
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    QRect crect = control->cursorRect();+
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    crect.moveTo(crect.topLeft() + QPoint(cix, vscroll));+
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    return crect;+
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}+
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+
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#ifndef QT_NO_COMPLETER+
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+
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void QLineEditPrivate::_q_completionHighlighted(QString newText)+
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{+
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    Q_Q(QLineEdit);+
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    if (control->completer()->completionMode() != QCompleter::InlineCompletion) {+
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        q->setText(newText);+
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    } else {+
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        int c = control->cursor();+
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        QString text = control->text();+
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        q->setText(text.left(c) + newText.mid(c));+
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        control->moveCursor(control->end(), false);+
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        control->moveCursor(c, true);+
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    }+
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}+
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+
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#endif // QT_NO_COMPLETER+
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+
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void QLineEditPrivate::_q_handleWindowActivate()+
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{+
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    Q_Q(QLineEdit);+
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    if (!q->hasFocus() && control->hasSelectedText())+
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        control->deselect();+
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}+
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+
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void QLineEditPrivate::_q_textEdited(const QString &text)+
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{+
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    Q_Q(QLineEdit);+
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#ifndef QT_NO_COMPLETER+
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    if (control->completer() &&+
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            control->completer()->completionMode() != QCompleter::InlineCompletion)+
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        control->complete(-1); // update the popup on cut/paste/del+
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#endif+
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    emit q->textEdited(text);+
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}+
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+
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void QLineEditPrivate::_q_cursorPositionChanged(int from, int to)+
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{+
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    Q_Q(QLineEdit);+
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    q->update();+
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    emit q->cursorPositionChanged(from, to);+
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}+
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+
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#ifdef QT_KEYPAD_NAVIGATION+
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void QLineEditPrivate::_q_editFocusChange(bool e)+
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{+
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    Q_Q(QLineEdit);+
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    q->setEditFocus(e);+
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}+
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#endif+
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+
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void QLineEditPrivate::init(const QString& txt)+
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{+
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    Q_Q(QLineEdit);+
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    control = new QLineControl(txt);+
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    control->setFont(q->font());+
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    QObject::connect(control, SIGNAL(textChanged(const QString &)),+
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            q, SIGNAL(textChanged(const QString &)));+
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    QObject::connect(control, SIGNAL(textEdited(const QString &)),+
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            q, SLOT(_q_textEdited(const QString &)));+
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    QObject::connect(control, SIGNAL(cursorPositionChanged(int, int)),+
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            q, SLOT(_q_cursorPositionChanged(int, int)));+
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    QObject::connect(control, SIGNAL(selectionChanged()),+
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            q, SIGNAL(selectionChanged()));+
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    QObject::connect(control, SIGNAL(accepted()),+
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            q, SIGNAL(returnPressed()));+
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    QObject::connect(control, SIGNAL(editingFinished()),+
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            q, SIGNAL(editingFinished()));+
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#ifdef QT_KEYPAD_NAVIGATION+
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    QObject::connect(control, SIGNAL(editFocusChange(bool)),+
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            q, SLOT(_q_editFocusChange(bool)));+
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#endif+
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    QObject::connect(control, SIGNAL(cursorPositionChanged(int, int)),+
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            q, SLOT(updateMicroFocus()));+
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+
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    // for now, going completely overboard with updates.+
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    QObject::connect(control, SIGNAL(selectionChanged()),+
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            q, SLOT(update()));+
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+
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    QObject::connect(control, SIGNAL(displayTextChanged(const QString &)),+
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            q, SLOT(update()));+
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+
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    QObject::connect(control, SIGNAL(updateNeeded(const QRect &)),+
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            q, SLOT(update()));+
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+
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    QStyleOptionFrameV2 opt;+
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    q->initStyleOption(&opt);+
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    control->setPasswordCharacter(q->style()->styleHint(QStyle::SH_LineEdit_PasswordCharacter, &opt, q));+
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#ifndef QT_NO_CURSOR+
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    q->setCursor(Qt::IBeamCursor);+
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#endif+
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    q->setFocusPolicy(Qt::StrongFocus);+
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    q->setAttribute(Qt::WA_InputMethodEnabled);+
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    //   Specifies that this widget can use more, but is able to survive on+
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    //   less, horizontal space; and is fixed vertically.+
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    q->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed, QSizePolicy::LineEdit));+
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    q->setBackgroundRole(QPalette::Base);+
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    q->setAttribute(Qt::WA_KeyCompression);+
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    q->setMouseTracking(true);+
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    q->setAcceptDrops(true);+
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+
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    q->setAttribute(Qt::WA_MacShowFocusRect);+
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}+
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+
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QRect QLineEditPrivate::adjustedContentsRect() const+
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{+
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    Q_Q(const QLineEdit);+
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    QStyleOptionFrameV2 opt;+
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    q->initStyleOption(&opt);+
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    QRect r = q->style()->subElementRect(QStyle::SE_LineEditContents, &opt, q);+
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    r.setX(r.x() + leftTextMargin);+
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    r.setY(r.y() + topTextMargin);+
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    r.setRight(r.right() - rightTextMargin);+
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    r.setBottom(r.bottom() - bottomTextMargin);+
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    return r;+
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}+
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+
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void QLineEditPrivate::setCursorVisible(bool visible)+
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{+
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    Q_Q(QLineEdit);+
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    if ((bool)cursorVisible == visible)+
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        return;+
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    cursorVisible = visible;+
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    QRect r = cursorRect();+
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    if (control->inputMask().isEmpty())+
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        q->update(r);+
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    else+
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        q->update();+
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}+
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+
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void QLineEditPrivate::updatePasswordEchoEditing(bool editing)+
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{+
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    Q_Q(QLineEdit);+
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    control->updatePasswordEchoEditing(editing);+
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    q->setAttribute(Qt::WA_InputMethodEnabled, shouldEnableInputMethod());+
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}+
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+
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/*!+
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  This function is not intended as polymorphic usage. Just a shared code+
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  fragment that calls QInputContext::mouseHandler for this+
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  class.+
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*/+
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bool QLineEditPrivate::sendMouseEventToInputContext( QMouseEvent *e )+
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{+
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#if !defined QT_NO_IM+
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    Q_Q(QLineEdit);+
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    if ( control->composeMode() ) {+
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	int tmp_cursor = xToPos(e->pos().x());+
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	int mousePos = tmp_cursor - control->cursor();+
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	if ( mousePos < 0 || mousePos > control->preeditAreaText().length() ) {+
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            mousePos = -1;+
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	    // don't send move events outside the preedit area+
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            if ( e->type() == QEvent::MouseMove )+
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                return true;+
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        }+
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+
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        QInputContext *qic = q->inputContext();+
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        if ( qic )+
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            // may be causing reset() in some input methods+
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            qic->mouseHandler(mousePos, e);+
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        if (!control->preeditAreaText().isEmpty())+
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            return true;+
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    }+
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#else+
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    Q_UNUSED(e);+
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#endif+
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+
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    return false;+
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}+
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+
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#ifndef QT_NO_DRAGANDDROP+
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void QLineEditPrivate::drag()+
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{+
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    Q_Q(QLineEdit);+
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    dndTimer.stop();+
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    QMimeData *data = new QMimeData;+
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    data->setText(control->selectedText());+
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    QDrag *drag = new QDrag(q);+
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    drag->setMimeData(data);+
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    Qt::DropAction action = drag->start();+
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    if (action == Qt::MoveAction && !control->isReadOnly() && drag->target() != q)+
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        control->removeSelection();+
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}+
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+
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#endif // QT_NO_DRAGANDDROP+
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+
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QT_END_NAMESPACE+
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+
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#endif+
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