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| |
| /*! \class TextEditFindWidget |
| |
| \brief A search bar that is commonly added below the searchable text. |
| |
| \internal |
| |
| This widget implements a search bar which becomes visible when the user |
| wants to start searching. It is a modern replacement for the commonly used |
| search dialog. It is usually placed below a QTextEdit using a QVBoxLayout. |
| |
| The QTextEdit instance will need to be associated with this class using |
| setTextEdit(). |
| |
| The search is incremental and can be set to case sensitive or whole words |
| using buttons available on the search bar. |
| |
| \sa QTextEdit |
| */ |
| |
| #include "texteditfindwidget.h" |
| |
| #include <QtWidgets/QCheckBox> |
| #include <QtGui/QTextCursor> |
| #include <QtWidgets/QTextEdit> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| Constructs a TextEditFindWidget. |
| |
| \a flags is passed to the AbstractFindWidget constructor. |
| \a parent is passed to the QWidget constructor. |
| */ |
| TextEditFindWidget::TextEditFindWidget(FindFlags flags, QWidget *parent) |
| : AbstractFindWidget(flags, parent) |
| , m_textEdit(0) |
| { |
| } |
| |
| /*! |
| Associates a QTextEdit with this find widget. Searches done using this find |
| widget will then apply to the given QTextEdit. |
| |
| An event filter is set on the QTextEdit which intercepts the ESC key while |
| the find widget is active, and uses it to deactivate the find widget. |
| |
| If the find widget is already associated with a QTextEdit, the event filter |
| is removed from this QTextEdit first. |
| |
| \a textEdit may be NULL. |
| */ |
| void TextEditFindWidget::setTextEdit(QTextEdit *textEdit) |
| { |
| if (m_textEdit) |
| m_textEdit->removeEventFilter(this); |
| |
| m_textEdit = textEdit; |
| |
| if (m_textEdit) |
| m_textEdit->installEventFilter(this); |
| } |
| |
| /*! |
| \reimp |
| */ |
| void TextEditFindWidget::deactivate() |
| { |
| // Pass focus to the text edit |
| if (m_textEdit) |
| m_textEdit->setFocus(); |
| |
| AbstractFindWidget::deactivate(); |
| } |
| |
| /*! |
| \reimp |
| */ |
| void TextEditFindWidget::find(const QString &ttf, bool skipCurrent, bool backward, bool *found, bool *wrapped) |
| { |
| if (!m_textEdit) |
| return; |
| |
| QTextCursor cursor = m_textEdit->textCursor(); |
| QTextDocument *doc = m_textEdit->document(); |
| |
| if (!doc || cursor.isNull()) |
| return; |
| |
| if (cursor.hasSelection()) |
| cursor.setPosition((skipCurrent && !backward) ? cursor.position() : cursor.anchor()); |
| |
| *found = true; |
| QTextCursor newCursor = cursor; |
| |
| if (!ttf.isEmpty()) { |
| QTextDocument::FindFlags options; |
| |
| if (backward) |
| options |= QTextDocument::FindBackward; |
| |
| if (caseSensitive()) |
| options |= QTextDocument::FindCaseSensitively; |
| |
| if (wholeWords()) |
| options |= QTextDocument::FindWholeWords; |
| |
| newCursor = doc->find(ttf, cursor, options); |
| if (newCursor.isNull()) { |
| QTextCursor ac(doc); |
| ac.movePosition(options & QTextDocument::FindBackward |
| ? QTextCursor::End : QTextCursor::Start); |
| newCursor = doc->find(ttf, ac, options); |
| if (newCursor.isNull()) { |
| *found = false; |
| newCursor = cursor; |
| } else { |
| *wrapped = true; |
| } |
| } |
| } |
| |
| if (!isVisible()) |
| show(); |
| |
| m_textEdit->setTextCursor(newCursor); |
| } |
| |
| QT_END_NAMESPACE |