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   1 /* $BEGIN_LICENSE
   2
   3 This file is part of Minitube.
   4 Copyright 2009, Flavio Tordini <flavio.tordini@gmail.com>
   5
   6 Minitube is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 Minitube is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with Minitube.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 $END_LICENSE */
  20 #ifndef AUTOCOMPLETE_H
  21 #define AUTOCOMPLETE_H
  22
  23 #include <QtGui>
  24
  25 class Suggester;
  26 class Suggestion;
  27 class SearchWidget;
  28
  29 QT_FORWARD_DECLARE_CLASS(QListWidget)
  30 QT_FORWARD_DECLARE_CLASS(QListWidgetItem)
  31 QT_FORWARD_DECLARE_CLASS(QLineEdit)
  32
  33 class AutoComplete : public QObject {
  34
  35     Q_OBJECT
  36
  37 public:
  38     AutoComplete(SearchWidget *buddy, QLineEdit *lineEdit);
  39     void setSuggester(Suggester* suggester);
  40     QListWidget* getPopup() { return popup; }
  41     void preventSuggest();
  42     void enableSuggest();
  43
  44 signals:
  45     void suggestionAccepted(Suggestion *suggestion);
  46     void suggestionAccepted(const QString &value);
  47
  48 protected:
  49     bool eventFilter(QObject *obj, QEvent *ev);
  50
  51 private slots:
  52     void acceptSuggestion();
  53     void suggest();
  54     void itemEntered(QListWidgetItem *item);
  55     void currentItemChanged(QListWidgetItem *item);
  56     void suggestionsReady(const QVector<Suggestion*> &suggestions);
  57     void adjustPosition();
  58     void enableItemHovering();
  59
  60 private:
  61     void showSuggestions(const QVector<Suggestion*> &suggestions);
  62     void hideSuggestions();
  63
  64     SearchWidget *buddy;
  65     QLineEdit *lineEdit;
  66     QString originalText;
  67     QListWidget *popup;
  68     QTimer *timer;
  69     bool enabled;
  70     Suggester *suggester;
  71     QVector<Suggestion*> suggestions;
  72     bool itemHovering;
  73 };
  74
  75 #endif // AUTOCOMPLETE_H