#ifndef COMPLETIONPOPUP_H
#define COMPLETIONPOPUP_H

#include <QListWidget>
#include <functional>
#include <vector>

struct EditorCompletionItem {
	QString display;
	QString detail;
	QString insertText;
	bool ambiguous = false;
};

struct EditorCompletionResult {
	int replaceStart = 0;
	int replaceLen = 0;
	bool hasQualifier = false; // completing behind "name."
	std::vector<EditorCompletionItem> items;
};

/// Callback that determines the completions for a cursor position in the text
using EditorCompletionCallback = std::function<EditorCompletionResult(const QString &text, int cursorPos)>;

/// List shown below the cursor, it never takes keyboard focus so typing continues in the editor.
class CompletionPopup : public QListWidget {
	Q_OBJECT
public:
	explicit CompletionPopup(QWidget *parent);

	void setItems(const std::vector<EditorCompletionItem> &items);
	void moveSelection(int delta);
	int currentRow() const { return QListWidget::currentRow(); }
	void showAt(const QPoint &globalPos);

signals:
	void itemAccepted(int row);
};

#endif // COMPLETIONPOPUP_H