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/*
* Copyright Johannes Sixt
* This file is licensed under the GNU General Public License Version 2.
* See the file COPYING in the toplevel directory of the source directory.
*/
#ifndef EXPRWND_H
#define EXPRWND_H
#include "qlistview.h"
#include <qlineedit.h>
#include <qpixmap.h>
#include <list>
class ProgramTypeTable;
class TypeInfo;
struct ExprValue;
class ExprWnd;
class QStringList;
/*! \brief a variable's value is the tree of sub-variables */
class VarTree : public QListViewItem
{
public:
enum VarKind { VKsimple, VKpointer, VKstruct, VKarray,
VKdummy //!< used to update only children
};
VarKind m_varKind;
enum NameKind { NKplain, NKstatic, NKtype,
NKanonymous, //!< an anonymous struct or union
NKaddress //!< a dereferenced pointer
};
NameKind m_nameKind;
TypeInfo* m_type; //!< the type of struct if it could be derived
int m_exprIndex; //!< used in struct value update
bool m_exprIndexUseGuard; //!< ditto; if guard expr should be used
QString m_partialValue; //!< while struct value update is in progress
VarTree(VarTree* parent, QListViewItem* after, ExprValue* v);
VarTree(ExprWnd* parent, QListViewItem* after, const QString& name);
virtual ~VarTree();
public:
virtual void paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align);
QString computeExpr() const;
bool isToplevelExpr() const;
/** is this element an ancestor of (or equal to) child? */
bool isAncestorEq(const VarTree* child) const;
/** update the regular value; returns whether a repaint is necessary */
bool updateValue(const QString& newValue);
/** update the "quick member" value; returns whether repaint is necessary */
bool updateStructValue(const QString& newValue);
/** find out the type of this value using the child values */
void inferTypesOfChildren(ProgramTypeTable& typeTable);
/** get the type from base class part */
TypeInfo* inferTypeFromBaseClass();
/** returns whether the pointer is a wchar_t */
bool isWcharT() const;
QString getText() const { return text(0); }
void setText(const QString& t) { QListViewItem::setText(0, t); }
void setPixmap(const QPixmap& p) { QListViewItem::setPixmap(0, p); }
QString value() const { return m_baseValue; }
VarTree* firstChild() const { return static_cast<VarTree*>(QListViewItem::firstChild()); }
VarTree* nextSibling() const { return static_cast<VarTree*>(QListViewItem::nextSibling()); }
private:
void updateValueText();
QString m_baseValue; //!< The "normal value" that the driver reported
QString m_structValue; //!< The "quick member" value
bool m_baseChanged : 1;
bool m_structChanged : 1;
};
/**
* Represents the value tree that is parsed by the debugger drivers.
*/
struct ExprValue
{
QString m_name;
QString m_value;
VarTree::VarKind m_varKind;
VarTree::NameKind m_nameKind;
ExprValue* m_child; /* the first child expression */
ExprValue* m_next; /* the next sibling expression */
bool m_initiallyExpanded;
ExprValue(const QString& name, VarTree::NameKind kind);
~ExprValue();
void appendChild(ExprValue* newChild);
int childCount() const;
};
class ValueEdit : public QLineEdit
{
Q_OBJECT
public:
ValueEdit(ExprWnd* parent);
~ValueEdit();
void terminate(bool commit);
VarTree* m_item;
bool m_finished;
protected:
void keyPressEvent(QKeyEvent *e);
void focusOutEvent(QFocusEvent* ev);
void paintEvent(QPaintEvent* e);
public slots:
void slotSelectionChanged();
signals:
void done(VarTree*, const QString&);
};
class ExprWnd : public QListView
{
Q_OBJECT
public:
ExprWnd(QWidget* parent, const QString& colHeader, const char* name);
~ExprWnd();
/** returns the list with the expressions at the topmost level */
QStringList exprList() const;
/** appends a copy of expr to the end of the tree at the topmost level;
* returns a pointer to the inserted top-level item */
VarTree* insertExpr(ExprValue* expr, ProgramTypeTable& typeTable);
/** updates an existing expression */
void updateExpr(ExprValue* expr, ProgramTypeTable& typeTable);
void updateExpr(VarTree* display, ExprValue* newValues, ProgramTypeTable& typeTable);
/** updates the value and repaints it for a single item (not the children) */
void updateSingleExpr(VarTree* display, ExprValue* newValues);
/** updates only the value of the node */
void updateStructValue(VarTree* display);
/** get a top-level expression by name */
VarTree* topLevelExprByName(const QString& name) const;
/** return a member of the struct that pointer \a v refers to */
static VarTree* ptrMemberByName(VarTree* v, const QString& name);
/** return a member of the struct \a v */
static VarTree* memberByName(VarTree* v, const QString& name);
/** removes an expression; must be on the topmost level*/
void removeExpr(VarTree* item);
/** clears the list of pointers needing updates */
void clearPendingUpdates();
/** returns a pointer to update (or 0) and removes it from the list */
VarTree* nextUpdatePtr();
VarTree* nextUpdateType();
VarTree* nextUpdateStruct();
void editValue(VarTree* item, const QString& text);
/** tells whether the a value is currently edited */
bool isEditing() const;
VarTree* firstChild() const { return static_cast<VarTree*>(QListView::firstChild()); }
VarTree* currentItem() const { return static_cast<VarTree*>(QListView::currentItem()); }
VarTree* selectedItem() const { return static_cast<VarTree*>(QListView::selectedItem()); }
protected:
void updateExprRec(VarTree* display, ExprValue* newValues, ProgramTypeTable& typeTable);
void replaceChildren(VarTree* display, ExprValue* newValues);
void collectUnknownTypes(VarTree* item);
void checkUnknownType(VarTree* item);
static QString formatWCharPointer(QString value);
QPixmap m_pixPointer;
std::list<VarTree*> m_updatePtrs; //!< dereferenced pointers that need update
std::list<VarTree*> m_updateType; //!< structs whose type must be determined
std::list<VarTree*> m_updateStruct; //!< structs whose nested value needs update
ValueEdit* m_edit;
/** remove items that are in the subTree from the list */
void unhookSubtree(VarTree* subTree);
static void unhookSubtree(std::list<VarTree*>& list, VarTree* subTree);
signals:
void removingItem(VarTree*);
void editValueCommitted(VarTree*, const QString&);
};
#endif // EXPRWND_H
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