42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
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#include "tagcompleter.h"
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#include <QLineEdit>
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#include <QStringListModel>
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TagCompleter::TagCompleter(QObject *parent)
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: QCompleter(parent)
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, m_model(new QStringListModel(this))
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{
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setModel(m_model);
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setCaseSensitivity(Qt::CaseInsensitive);
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setFilterMode(Qt::MatchContains); // match anywhere in the tag, like Android
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setCompletionMode(QCompleter::PopupCompletion);
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}
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void TagCompleter::setSuggestions(const QStringList &tags)
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{
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m_model->setStringList(tags);
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}
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// Complete against the token after the last comma, ignoring the tags already
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// entered before it.
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QStringList TagCompleter::splitPath(const QString &path) const
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{
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return QStringList(path.section(QLatin1Char(','), -1).trimmed());
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}
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// Rebuild the full field value: everything up to and including the last comma,
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// then the chosen tag and a trailing ", " ready for the next one.
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QString TagCompleter::pathFromIndex(const QModelIndex &index) const
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{
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const QString completion = QCompleter::pathFromIndex(index);
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const auto *edit = qobject_cast<const QLineEdit *>(widget());
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if (!edit)
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return completion;
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const QString text = edit->text();
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const int lastComma = text.lastIndexOf(QLatin1Char(','));
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const QString head =
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lastComma >= 0 ? text.left(lastComma + 1) + QLatin1Char(' ') : QString();
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return head + completion + QStringLiteral(", ");
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}
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