kdbg/exprwnd.h

   1 // $Id$
   2
   3 // Copyright by Johannes Sixt
   4 // This file is under GPL, the GNU General Public Licence
   5
   6 #ifndef EXPRWND_H
   7 #define EXPRWND_H
   8
   9 #include "qlistview.h"
  10 #include <qlineedit.h>
  11 #include <qpixmap.h>
  12 #include <qptrlist.h>
  13 #include <qstrlist.h>
  14
  15 class ProgramTypeTable;
  16 class TypeInfo;
  17 struct ExprValue;
  18 class ExprWnd;
  19
  20 /* a variable's value is the tree of sub-variables */
  21
  22 class VarTree : public QListViewItem
  23 {
  24 public:
  25     enum VarKind { VKsimple, VKpointer, VKstruct, VKarray,
  26         VKdummy                         /* used to update only children */
  27     };
  28     VarKind m_varKind;
  29     enum NameKind { NKplain, NKstatic, NKtype,
  30         NKanonymous,                    /* an anonymous struct or union */
  31         NKaddress                       /* a dereferenced pointer */
  32     };
  33     NameKind m_nameKind;
  34     TypeInfo* m_type;                   /* type of struct */
  35     int m_exprIndex;                    /* used in struct value update */
  36     bool m_exprIndexUseGuard;           /* ditto; if guard expr should be used */
  37     QString m_partialValue;             /* while struct value update is in progress */
  38
  39     VarTree(VarTree* parent, QListViewItem* after, ExprValue* v);
  40     VarTree(ExprWnd* parent, QListViewItem* after, const QString& name);
  41     virtual ~VarTree();
  42 public:
  43     virtual void paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align);
  44     QString computeExpr() const;
  45     bool isToplevelExpr() const;
  46     /** is this element an ancestor of (or equal to) child? */
  47     bool isAncestorEq(const VarTree* child) const;
  48     /** update the regular value; returns whether a repaint is necessary */
  49     bool updateValue(const QString& newValue);
  50     /** update the "quick member" value; returns whether repaint is necessary */
  51     bool updateStructValue(const QString& newValue);
  52     /** find out the type of this value using the child values */
  53     void inferTypesOfChildren(ProgramTypeTable& typeTable);
  54     /** get the type from base class part */
  55     TypeInfo* inferTypeFromBaseClass();
  56     /** returns whether the pointer is a wchar_t */
  57     bool isWcharT() const;
  58
  59     QString getText() const { return text(0); }
  60     void setText(const QString& t) { QListViewItem::setText(0, t); }
  61     void setPixmap(const QPixmap& p) { QListViewItem::setPixmap(0, p); }
  62     QString value() const { return m_baseValue; }
  63     VarTree* firstChild() const { return static_cast<VarTree*>(QListViewItem::firstChild()); }
  64     VarTree* nextSibling() const { return static_cast<VarTree*>(QListViewItem::nextSibling()); }
  65
  66 private:
  67     void updateValueText();
  68     QString m_baseValue;        //!< The "normal value" that the driver reported
  69     QString m_structValue;      //!< The "quick member" value
  70     bool m_baseChanged : 1;
  71     bool m_structChanged : 1;
  72 };
  73
  74 /**
  75  * Represents the value tree that is parsed by the debugger drivers.
  76  */
  77 struct ExprValue
  78 {
  79     QString m_name;
  80     QString m_value;
  81     VarTree::VarKind m_varKind;
  82     VarTree::NameKind m_nameKind;
  83     ExprValue* m_child;                 /* the first child expression */
  84     ExprValue* m_next;                  /* the next sibling expression */
  85     bool m_initiallyExpanded;
  86
  87     ExprValue(const QString& name, VarTree::NameKind kind);
  88     ~ExprValue();
  89
  90     void appendChild(ExprValue* newChild);
  91     int childCount() const;
  92 };
  93
  94
  95 class ValueEdit : public QLineEdit
  96 {
  97     Q_OBJECT
  98 public:
  99     ValueEdit(ExprWnd* parent);
 100     ~ValueEdit();
 101
 102     void terminate(bool commit);
 103     VarTree* m_item;
 104     bool m_finished;
 105 protected:
 106     void keyPressEvent(QKeyEvent *e);
 107     void focusOutEvent(QFocusEvent* ev);
 108     void paintEvent(QPaintEvent* e);
 109 public slots:
 110     void slotSelectionChanged();
 111 signals:
 112     void done(VarTree*, const QString&);
 113 };
 114
 115
 116 class ExprWnd : public QListView
 117 {
 118     Q_OBJECT
 119 public:
 120     ExprWnd(QWidget* parent, const QString& colHeader, const char* name);
 121     ~ExprWnd();
 122
 123     /** fills the list with the expressions at the topmost level */
 124     void exprList(QStrList& exprs);
 125     /** appends a copy of expr to the end of the tree at the topmost level;
 126      * returns a pointer to the inserted top-level item */
 127     VarTree* insertExpr(ExprValue* expr, ProgramTypeTable& typeTable);
 128     /** updates an existing expression */
 129     void updateExpr(ExprValue* expr, ProgramTypeTable& typeTable);
 130     void updateExpr(VarTree* display, ExprValue* newValues, ProgramTypeTable& typeTable);
 131     /** updates the value and repaints it for a single item (not the children) */
 132     void updateSingleExpr(VarTree* display, ExprValue* newValues);
 133     /** updates only the value of the node */
 134     void updateStructValue(VarTree* display);
 135     /** get a top-level expression by name */
 136     VarTree* topLevelExprByName(const char* name);
 137     /** return a member of the struct that pointer \a v refers to */
 138     static VarTree* ptrMemberByName(VarTree* v, const QString& name);
 139     /** return a member of the struct \a v */
 140     static VarTree* memberByName(VarTree* v, const QString& name);
 141     /** removes an expression; must be on the topmost level*/
 142     void removeExpr(VarTree* item);
 143     /** clears the list of pointers needing updates */
 144     void clearPendingUpdates();
 145     /** returns a pointer to update (or 0) and removes it from the list */
 146     VarTree* nextUpdatePtr();
 147     VarTree* nextUpdateType();
 148     VarTree* nextUpdateStruct();
 149     void editValue(VarTree* item, const QString& text);
 150     /** tells whether the a value is currently edited */
 151     bool isEditing() const;
 152
 153     VarTree* firstChild() const { return static_cast<VarTree*>(QListView::firstChild()); }
 154     VarTree* currentItem() const { return static_cast<VarTree*>(QListView::currentItem()); }
 155     VarTree* selectedItem() const { return static_cast<VarTree*>(QListView::selectedItem()); }
 156
 157 protected:
 158     void updateExprRec(VarTree* display, ExprValue* newValues, ProgramTypeTable& typeTable);
 159     void replaceChildren(VarTree* display, ExprValue* newValues);
 160     void collectUnknownTypes(VarTree* item);
 161     void checkUnknownType(VarTree* item);
 162     static QString formatWCharPointer(QString value);
 163     QPixmap m_pixPointer;
 164
 165     QList<VarTree> m_updatePtrs;        /* dereferenced pointers that need update */
 166     QList<VarTree> m_updateType;        /* structs whose type must be determined */
 167     QList<VarTree> m_updateStruct;      /* structs whose nested value needs update */
 168
 169     ValueEdit* m_edit;
 170
 171     /** remove items that are in the subTree from the list */
 172     void unhookSubtree(VarTree* subTree);
 173     static void unhookSubtree(QList<VarTree>& list, VarTree* subTree);
 174
 175 signals:
 176     void removingItem(VarTree*);
 177     void editValueCommitted(VarTree*, const QString&);
 178 };
 179
 180 #endif // EXPRWND_H