Function signature table in edit function dialog

Author: D0ntPanic

ui/completioncombobox.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <QtGui/QKeyEvent>
+#include <QtWidgets/QComboBox>
+
+//! CompletionComboBox is a subclass of QComboBox intended to have a more
+//! familiar user experience when working with auto-completion.
+//!
+//! Most notably, the <TAB> keypress is intercepted so that the tab key can be
+//! used to cycle through completion options. This is similar the behavior found
+//! in most text editors and IDEs.
+//!
+//! Additionally, the combo box is editable and uses case-sensitive matching,
+//! popup-style completion, and a "no insert" policy by default.
+class CompletionComboBox : public QComboBox {
+    Q_OBJECT
+
+	bool m_forwardReturnEvents = true;
+
+    //! Manually cycle the selected completion suggestion, forward by default.
+    bool cycleCompletion(bool forward = true);
+
+protected:
+    bool event(QEvent* event) override;
+
+public:
+    CompletionComboBox(QWidget* parent = nullptr);
+
+	void setForwardReturnEvents(bool forward) { m_forwardReturnEvents = forward; }
+
+Q_SIGNALS:
+    void enterPressed();
+};

ui/typecompletioncombobox.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include <QtCore/QStringListModel>
+#ifndef BINARYNINJAUI_BINDINGS
+	#include <QtCore/QThread>
+#endif
+#include <optional>
+#include "completioncombobox.h"
+#include "binaryninjaapi.h"
+#include "uitypes.h"
+
+
+/*!
+
+	\ingroup typedialog
+*/
+class BINARYNINJAUIAPI GetTypesListThread : public QThread
+{
+	Q_OBJECT
+
+	QStringList m_allTypes;
+	std::function<void()> m_completeFunc;
+	std::mutex m_mutex;
+	bool m_done;
+	BinaryNinja::TypeContainer m_typeContainer;
+
+protected:
+	virtual void run() override;
+
+public:
+	GetTypesListThread(BinaryNinja::TypeContainer typeContainer, const std::function<void()>& completeFunc);
+	void cancel();
+
+	const QStringList& getTypes() const { return m_allTypes; }
+};
+
+//! A CompletionComboBox pre-configured for type name autocompletion.
+//!
+//! Fetches type names from a TypeContainer in a background thread and populates
+//! the completer model. Respects the ui.types.substring and
+//! ui.types.maxAutoFeaturesCount settings.
+//!
+//! Optionally manages a persistent input history stored in QSettings.
+class BINARYNINJAUIAPI TypeCompletionComboBox : public CompletionComboBox
+{
+	Q_OBJECT
+
+	QStringListModel* m_model;
+	GetTypesListThread* m_updateThread = nullptr;
+	QStringList m_historyEntries;
+	int m_historySize;
+
+	void customEvent(QEvent* event) override;
+
+public:
+	TypeCompletionComboBox(std::optional<BinaryNinja::TypeContainer> typeContainer, QWidget* parent = nullptr,
+		QString existing = QString());
+	~TypeCompletionComboBox();
+
+	//! Commit the current text to the persistent input history.
+	void commitHistory();
+
+	QStringListModel* completionModel() const { return m_model; }
+};

ui/typedialog.h

@@ -5,11 +5,9 @@
 #include <QtCore/QStringListModel>
 #include <QtWidgets/QComboBox>
 #include <QtCore/QTimer>
-#ifndef BINARYNINJAUI_BINDINGS
-	#include <QtCore/QThread>
-#endif
 #include "binaryninjaapi.h"
 #include "uitypes.h"
+#include "typecompletioncombobox.h"
 
 
 #ifdef BINARYNINJAUI_BINDINGS
@@ -24,30 +22,6 @@ class ParseTypeThread;
  	\ingroup uiapi
 */
 
-/*!
-
-    \ingroup typedialog
-*/
-class BINARYNINJAUIAPI GetTypesListThread : public QThread
-{
-	Q_OBJECT
-
-	QStringList m_allTypes;
-	std::function<void()> m_completeFunc;
-	std::mutex m_mutex;
-	bool m_done;
-	BinaryNinja::TypeContainer m_typeContainer;
-
-  protected:
-	virtual void run() override;
-
-  public:
-	GetTypesListThread(BinaryNinja::TypeContainer typeContainer, const std::function<void()>& completeFunc);
-	void cancel();
-
-	const QStringList& getTypes() const { return m_allTypes; }
-};
-
 Q_DECLARE_METATYPE(BinaryNinja::QualifiedNameAndType);
 
 /*! QThread subclass for handling type string parsing to avoid UI interruptions.
@@ -80,16 +54,13 @@ class BINARYNINJAUIAPI TypeDialog : public QDialog
 {
 	Q_OBJECT
 
-	QComboBox* m_combo;
+	TypeCompletionComboBox* m_combo;
 	QStringListModel* m_model;
 	QLabel* m_prompt;
 	QString m_promptText;
 	std::optional<BinaryNinja::TypeContainer> m_typeContainer;
 	bool m_resultValid = true;
 	bool m_resolved = false;
-	QStringList m_historyEntries;
-	int m_historySize;
-	GetTypesListThread* m_updateThread = nullptr;
 	BinaryNinja::QualifiedNameAndType m_type;
 	QPushButton* m_acceptButton;
 	QTimer* m_updateTimer;
@@ -99,7 +70,6 @@ class BINARYNINJAUIAPI TypeDialog : public QDialog
 	QString m_parseError;
 
 	void commitHistory();
-	void customEvent(QEvent* event);
 	void saveLocation();
 	void reject();
 	void accept();