134 lines
No EOL
4.4 KiB
C++
134 lines
No EOL
4.4 KiB
C++
#include <QStringListModel>
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#include <QLineEdit>
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#include <QCompleter>
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#include <QWidget>
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#include <QTextCursor>
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#include <QAbstractItemView>
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#include <QScrollBar>
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#include <QStringListModel>
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#include <QKeyEvent>
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#include <QFocusEvent>
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#include "lineeditcompleter.h"
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LineEditCompleter::LineEditCompleter(QWidget *parent)
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: QLineEdit(parent)
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{
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}
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void LineEditCompleter::focusOutEvent(QFocusEvent * e){
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QLineEdit::focusOutEvent(e);
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if (c->popup()->isVisible()){
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//Remove Popup
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c->popup()->hide();
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//Truncate the line to last space or whole string
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QString textValue = text();
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int lastIndex = textValue.length();
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int lastWordStartIndex = textValue.lastIndexOf(" ") + 1;
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int leftShift = qMin(lastIndex, lastWordStartIndex);
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setText(textValue.left(leftShift));
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//Insert highlighted line from popup
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insert(c->completionModel()->index(c->popup()->currentIndex().row(), 0).data().toString() + " ");
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//Set focus back to the textbox since tab was pressed
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setFocus();
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}
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}
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void LineEditCompleter::keyPressEvent(QKeyEvent * event)
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{
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switch (event->key()){
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case Qt::Key_Return:
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case Qt::Key_Enter:
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case Qt::Key_Escape:
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if (c->popup()->isVisible()){
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event->ignore();
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//Remove Popup
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c->popup()->hide();
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//Truncate the line to last space or whole string
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QString textValue = text();
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int lastIndexof = qMax(0, textValue.lastIndexOf(" "));
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QString finalString = textValue.left(lastIndexof);
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//Add a space if there's a word
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if (finalString != "")
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finalString += " ";
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setText(finalString);
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return;
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}
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break;
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case Qt::Key_Space:
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if (c->popup()->isVisible()){
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event->ignore();
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//Remove Popup
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c->popup()->hide();
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//Truncate the line to last space or whole string
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QString textValue = text();
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int lastIndex = textValue.length();
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int lastWordStartIndex = textValue.lastIndexOf(" ") + 1;
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int leftShift = qMin(lastIndex, lastWordStartIndex);
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setText(textValue.left(leftShift));
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//Insert highlighted line from popup
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insert(c->completionModel()->index(c->popup()->currentIndex().row(), 0).data().toString() + " ");
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return;
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}
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break;
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default:
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break;
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}
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QLineEdit::keyPressEvent(event);
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// return if the completer is null or if the most recently typed char was '@'.
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// Only want the popup AFTER typing the first char of the mention.
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if (!c || text().right(1).contains("@")) {
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c->popup()->hide();
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return;
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}
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//Set new completion prefix
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c->setCompletionPrefix(cursorWord(text()));
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if (c->completionPrefix().length() < 1){
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c->popup()->hide();
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return;
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}
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//Draw completion box
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QRect cr = cursorRect();
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cr.setWidth(c->popup()->sizeHintForColumn(0) + c->popup()->verticalScrollBar()->sizeHint().width());
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c->complete(cr);
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//Select first item in the completion popup
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QItemSelectionModel* sm = new QItemSelectionModel(c->completionModel());
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c->popup()->setSelectionModel(sm);
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sm->select(c->completionModel()->index(0, 0), QItemSelectionModel::ClearAndSelect);
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sm->setCurrentIndex(c->completionModel()->index(0, 0), QItemSelectionModel::NoUpdate);
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}
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QString LineEditCompleter::cursorWord(const QString &line) const
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{
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return line.mid(line.left(cursorPosition()).lastIndexOf(" ") + 1,
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cursorPosition() - line.left(cursorPosition()).lastIndexOf(" ") - 1);
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}
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void LineEditCompleter::insertCompletion(QString arg)
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{
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QString s_arg = arg + " ";
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setText(text().replace(text().left(cursorPosition()).lastIndexOf(" ") + 1,
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cursorPosition() - text().left(cursorPosition()).lastIndexOf(" ") - 1, s_arg));
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}
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void LineEditCompleter::setCompleter(QCompleter* completer)
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{
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c = completer;
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c->setWidget(this);
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connect(c, SIGNAL(activated(QString)), this, SLOT(insertCompletion(QString)));
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}
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void LineEditCompleter::setCompletionList(QStringList completionList)
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{
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if (!c || c->popup()->isVisible())
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return;
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QStringListModel *model;
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model = (QStringListModel*)(c->model());
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if (model == NULL)
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model = new QStringListModel();
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model->setStringList(completionList);
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} |