texteditorautocompletecomponent.h

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// edbee - Copyright (c) 2012-2025 by Rick Blommers and contributors
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "edbee/exports.h"
 
#include <QModelIndex>
#include <QWidget>
#include <QLabel>
#include <QAbstractItemDelegate>
#include <QPainter>
#include <QScrollBar>
#include <QStylePainter>
#include <QPointer>
#include <QMenu>
#include <QTextDocument>
 
class QListWidget;
class QListWidgetItem;
 
namespace edbee {
 
class TextDocument;
class TextEditorController;
class TextEditorComponent;
class TextMarginComponent;
class TextEditorWidget;
class TextRange;
 
class FakeToolTip : public QWidget
{
    Q_OBJECT
 
public:
    explicit FakeToolTip(TextEditorController *controller, QWidget *parent = 0);
    void setText(const QString text);
    QTextDocument* tipText;
    TextEditorController* controller();
 
private:
    TextEditorController* controllerRef_;       
 
protected:
    void paintEvent(QPaintEvent *e);
    void resizeEvent(QResizeEvent *e);
};
class FakeToolTip : public QWidget {…};
 
// inspiration:
// http://doc.qt.io/qt-5/qtwidgets-tools-customcompleter-example.html

class EDBEE_EXPORT TextEditorAutoCompleteComponent : public QWidget
{
    Q_OBJECT
public:
    explicit TextEditorAutoCompleteComponent(TextEditorController* controller, TextEditorComponent *parent, TextMarginComponent *margin);
 
    TextEditorController* controller() const;
 
    QSize sizeHint() const;
protected:
 
    bool shouldDisplayAutoComplete(TextRange& range, QString& word);
    void hideInfoTip();
    bool fillAutoCompleteList(TextDocument *document, const TextRange &range, const QString& word );
 
    void positionWidgetForCaretOffset(int offset);
    bool eventFilter(QObject* obj, QEvent* event);
 
    void hideEvent(QHideEvent *event);
    //void focusOutEvent(QFocusEvent *event);
    //void moveEvent(QMoveEvent *event);
 
    void insertCurrentSelectedListItem();
signals:
 
public slots:
    void updateList();
    void backspacePressed();
    void textKeyPressed();
    void listItemClicked(QListWidgetItem*item);
    void listItemDoubleClicked(QListWidgetItem*item);
    void selectItemOnHover(QModelIndex modelIndex);
    void showInfoTip();
 
private:
    TextEditorController* controllerRef_;       
    QMenu* menuRef_;
    QListWidget* listWidgetRef_;                
    TextEditorComponent* editorComponentRef_;   
    TextMarginComponent* marginComponentRef_;   
    bool eventBeingFiltered_;                   
    QString currentWord_;                       
    bool canceled_;                             
    QPointer<FakeToolTip> infoTipRef_;
};
class EDBEE_EXPORT TextEditorAutoCompleteComponent : public QWidget {…};
 
class AutoCompleteDelegate : public QAbstractItemDelegate
{
    Q_OBJECT
 
public:
    AutoCompleteDelegate(TextEditorController *controller, QObject *parent = 0);
 
    TextEditorController* controller() const;
 
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
 
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
 
public slots:
 
private:
    TextEditorController* controllerRef_;       
    int pixelSize;
};
class AutoCompleteDelegate : public QAbstractItemDelegate {…};
 
}