| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** Contact: Qt Software Information ([email protected])
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| 5 | **
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| 6 | ** This file is part of the QtGui module of the Qt Toolkit.
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| 7 | **
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$
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| 9 | ** Commercial Usage
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| 10 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 11 | ** accordance with the Qt Commercial License Agreement provided with the
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| 12 | ** Software or, alternatively, in accordance with the terms contained in
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| 13 | ** a written agreement between you and Nokia.
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| 14 | **
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| 15 | ** GNU Lesser General Public License Usage
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| 16 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 17 | ** General Public License version 2.1 as published by the Free Software
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| 18 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 19 | ** packaging of this file. Please review the following information to
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| 20 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 22 | **
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| 23 | ** In addition, as a special exception, Nokia gives you certain
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| 24 | ** additional rights. These rights are described in the Nokia Qt LGPL
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| 25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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| 26 | ** package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you are unsure which license is appropriate for your use, please
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| 37 | ** contact the sales department at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #ifndef QLINEEDIT_P_H
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| 43 | #define QLINEEDIT_P_H
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| 44 |
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| 45 | //
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| 46 | // W A R N I N G
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| 47 | // -------------
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| 48 | //
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| 49 | // This file is not part of the Qt API. It exists purely as an
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| 50 | // implementation detail. This header file may change from version to
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| 51 | // version without notice, or even be removed.
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| 52 | //
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| 53 | // We mean it.
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| 54 | //
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| 55 |
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| 56 | #include "QtCore/qglobal.h"
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| 57 |
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| 58 | #ifndef QT_NO_LINEEDIT
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| 59 | #include "private/qwidget_p.h"
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| 60 | #include "QtGui/qlineedit.h"
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| 61 | #include "QtGui/qtextlayout.h"
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| 62 | #include "QtGui/qstyleoption.h"
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| 63 | #include "QtCore/qbasictimer.h"
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| 64 | #include "QtGui/qcompleter.h"
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| 65 | #include "QtCore/qpointer.h"
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| 66 | #include "QtGui/qlineedit.h"
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| 67 |
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| 68 | QT_BEGIN_NAMESPACE
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| 69 |
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| 70 | class QLineEditPrivate : public QWidgetPrivate
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| 71 | {
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| 72 | Q_DECLARE_PUBLIC(QLineEdit)
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| 73 | public:
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| 74 |
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| 75 | QLineEditPrivate()
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| 76 | : cursor(0), preeditCursor(0), cursorTimer(0), frame(1),
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| 77 | cursorVisible(0), hideCursor(false), separator(0), readOnly(0),
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| 78 | dragEnabled(0), contextMenuEnabled(1), echoMode(0), textDirty(0),
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| 79 | selDirty(0), validInput(1), alignment(Qt::AlignLeading | Qt::AlignVCenter), ascent(0),
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| 80 | maxLength(32767), hscroll(0), vscroll(0), lastCursorPos(-1), maskData(0),
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| 81 | modifiedState(0), undoState(0), selstart(0), selend(0), userInput(false),
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| 82 | emitingEditingFinished(false), passwordEchoEditing(false)
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| 83 | #ifndef QT_NO_COMPLETER
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| 84 | , completer(0)
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| 85 | #endif
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| 86 | , leftTextMargin(0), topTextMargin(0), rightTextMargin(0), bottomTextMargin(0)
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| 87 | {
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| 88 | }
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| 89 |
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| 90 | ~QLineEditPrivate()
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| 91 | {
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| 92 | delete [] maskData;
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| 93 | }
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| 94 | void init(const QString&);
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| 95 |
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| 96 | QString text;
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| 97 | int cursor;
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| 98 | int preeditCursor;
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| 99 | int cursorTimer; // -1 for non blinking cursor.
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| 100 | QPoint tripleClick;
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| 101 | QBasicTimer tripleClickTimer;
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| 102 | uint frame : 1;
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| 103 | uint cursorVisible : 1;
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| 104 | uint hideCursor : 1; // used to hide the cursor inside preedit areas
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| 105 | uint separator : 1;
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| 106 | uint readOnly : 1;
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| 107 | uint dragEnabled : 1;
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| 108 | uint contextMenuEnabled : 1;
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| 109 | uint echoMode : 2;
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| 110 | uint textDirty : 1;
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| 111 | uint selDirty : 1;
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| 112 | uint validInput : 1;
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| 113 | uint alignment;
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| 114 | int ascent;
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| 115 | int maxLength;
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| 116 | int hscroll;
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| 117 | int vscroll;
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| 118 | int lastCursorPos;
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| 119 |
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| 120 | #ifndef QT_NO_CONTEXTMENU
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| 121 | QPointer<QAction> selectAllAction;
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| 122 | #endif
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| 123 |
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| 124 | inline void emitCursorPositionChanged();
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| 125 | bool sendMouseEventToInputContext(QMouseEvent *e);
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| 126 |
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| 127 | void finishChange(int validateFromState = -1, bool update = false, bool edited = true);
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| 128 |
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| 129 | QPointer<QValidator> validator;
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| 130 | struct MaskInputData {
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| 131 | enum Casemode { NoCaseMode, Upper, Lower };
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| 132 | QChar maskChar; // either the separator char or the inputmask
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| 133 | bool separator;
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| 134 | Casemode caseMode;
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| 135 | };
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| 136 | QString inputMask;
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| 137 | QChar blank;
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| 138 | MaskInputData *maskData;
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| 139 | inline int nextMaskBlank(int pos) {
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| 140 | int c = findInMask(pos, true, false);
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| 141 | separator |= (c != pos);
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| 142 | return (c != -1 ? c : maxLength);
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| 143 | }
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| 144 | inline int prevMaskBlank(int pos) {
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| 145 | int c = findInMask(pos, false, false);
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| 146 | separator |= (c != pos);
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| 147 | return (c != -1 ? c : 0);
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| 148 | }
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| 149 |
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| 150 | void setCursorVisible(bool visible);
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| 151 |
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| 152 |
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| 153 | // undo/redo handling
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| 154 | enum CommandType { Separator, Insert, Remove, Delete, RemoveSelection, DeleteSelection, SetSelection };
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| 155 | struct Command {
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| 156 | inline Command() {}
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| 157 | inline Command(CommandType t, int p, QChar c, int ss, int se) : type(t),uc(c),pos(p),selStart(ss),selEnd(se) {}
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| 158 | uint type : 4;
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| 159 | QChar uc;
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| 160 | int pos, selStart, selEnd;
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| 161 | };
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| 162 | int modifiedState;
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| 163 | int undoState;
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| 164 | QVector<Command> history;
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| 165 | void addCommand(const Command& cmd);
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| 166 | void insert(const QString& s);
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| 167 | void del(bool wasBackspace = false);
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| 168 | void remove(int pos);
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| 169 |
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| 170 | inline void separate() { separator = true; }
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| 171 | void undo(int until = -1);
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| 172 | void redo();
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| 173 | inline bool isUndoAvailable() const { return !readOnly && undoState; }
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| 174 | inline bool isRedoAvailable() const { return !readOnly && undoState < (int)history.size(); }
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| 175 |
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| 176 | // selection
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| 177 | int selstart, selend;
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| 178 | inline bool allSelected() const { return !text.isEmpty() && selstart == 0 && selend == (int)text.length(); }
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| 179 | inline bool hasSelectedText() const { return !text.isEmpty() && selend > selstart; }
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| 180 | inline void deselect() { selDirty |= (selend > selstart); selstart = selend = 0; }
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| 181 | void removeSelectedText();
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| 182 | #ifndef QT_NO_CLIPBOARD
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| 183 | void copy(bool clipboard = true) const;
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| 184 | #endif
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| 185 | inline bool inSelection(int x) const
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| 186 | { if (selstart >= selend) return false;
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| 187 | int pos = xToPos(x, QTextLine::CursorOnCharacter); return pos >= selstart && pos < selend; }
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| 188 |
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| 189 | // masking
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| 190 | void parseInputMask(const QString &maskFields);
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| 191 | bool isValidInput(QChar key, QChar mask) const;
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| 192 | bool hasAcceptableInput(const QString &text) const;
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| 193 | QString maskString(uint pos, const QString &str, bool clear = false) const;
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| 194 | QString clearString(uint pos, uint len) const;
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| 195 | QString stripString(const QString &str) const;
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| 196 | int findInMask(int pos, bool forward, bool findSeparator, QChar searchChar = QChar()) const;
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| 197 |
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| 198 | // input methods
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| 199 | bool composeMode() const { return !textLayout.preeditAreaText().isEmpty(); }
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| 200 |
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| 201 | // complex text layout
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| 202 | QTextLayout textLayout;
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| 203 | void updateTextLayout();
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| 204 | void moveCursor(int pos, bool mark = false);
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| 205 | void setText(const QString& txt, int pos = -1, bool edited = true);
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| 206 | int xToPos(int x, QTextLine::CursorPosition = QTextLine::CursorBetweenCharacters) const;
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| 207 | QRect cursorRect() const;
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| 208 | bool fixup();
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| 209 |
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| 210 | QRect adjustedContentsRect() const;
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| 211 |
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| 212 | #ifndef QT_NO_DRAGANDDROP
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| 213 | // drag and drop
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| 214 | QPoint dndPos;
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| 215 | QBasicTimer dndTimer;
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| 216 | void drag();
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| 217 | #endif
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| 218 |
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| 219 | void _q_clipboardChanged();
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| 220 | void _q_handleWindowActivate();
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| 221 | void _q_deleteSelected();
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| 222 | bool userInput;
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| 223 | bool emitingEditingFinished;
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| 224 |
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| 225 | #ifdef QT_KEYPAD_NAVIGATION
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| 226 | QBasicTimer deleteAllTimer; // keypad navigation
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| 227 | QString origText;
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| 228 | #endif
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| 229 |
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| 230 | bool passwordEchoEditing;
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| 231 | void updatePasswordEchoEditing(bool editing);
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| 232 |
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| 233 | #ifndef QT_NO_COMPLETER
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| 234 | QPointer<QCompleter> completer;
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| 235 | void complete(int key = -1);
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| 236 | void _q_completionHighlighted(QString);
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| 237 | bool advanceToEnabledItem(int n);
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| 238 | #endif
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| 239 |
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| 240 | int leftTextMargin;
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| 241 | int topTextMargin;
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| 242 | int rightTextMargin;
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| 243 | int bottomTextMargin;
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| 244 | };
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| 245 |
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| 246 | #endif // QT_NO_LINEEDIT
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| 247 |
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| 248 | QT_END_NAMESPACE
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| 249 |
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| 250 | #endif // QLINEEDIT_P_H
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