gdb/tui/tuiDataWin.c

   1 /* Data/register window display.
   2    Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3    Contributed by Hewlett-Packard Company.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "tui.h"
  24 #include "tuiData.h"
  25 #include "tuiRegs.h"
  26
  27
  28 /*****************************************
  29 ** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
  30 ******************************************/
  31
  32
  33
  34 /*****************************************
  35 ** PUBLIC FUNCTIONS                        **
  36 ******************************************/
  37
  38
  39 /*
  40    ** tuiFirstDataItemDisplayed()
  41    **    Answer the index first element displayed.
  42    **    If none are displayed, then return (-1).
  43  */
  44 int
  45 tuiFirstDataItemDisplayed (void)
  46 {
  47   int elementNo = (-1);
  48   int i;
  49
  50   for (i = 0; (i < dataWin->generic.contentSize && elementNo < 0); i++)
  51     {
  52       TuiGenWinInfoPtr dataItemWin;
  53
  54       dataItemWin = &((TuiWinContent)
  55                       dataWin->generic.content)[i]->whichElement.dataWindow;
  56       if (dataItemWin->handle != (WINDOW *) NULL && dataItemWin->isVisible)
  57         elementNo = i;
  58     }
  59
  60   return elementNo;
  61 }                               /* tuiFirstDataItemDisplayed */
  62
  63
  64 /*
  65    ** tuiFirstDataElementNoInLine()
  66    **        Answer the index of the first element in lineNo.  If lineNo is
  67    **        past the data area (-1) is returned.
  68  */
  69 int
  70 tuiFirstDataElementNoInLine (int lineNo)
  71 {
  72   int firstElementNo = (-1);
  73
  74   /*
  75      ** First see if there is a register on lineNo, and if so, set the
  76      ** first element number
  77    */
  78   if ((firstElementNo = tuiFirstRegElementNoInLine (lineNo)) == -1)
  79     {                           /*
  80                                    ** Looking at the general data, the 1st element on lineNo
  81                                  */
  82     }
  83
  84   return firstElementNo;
  85 }                               /* tuiFirstDataElementNoInLine */
  86
  87
  88 /*
  89    ** tuiDeleteDataContentWindows()
  90    **        Function to delete all the item windows in the data window.
  91    **        This is usually done when the data window is scrolled.
  92  */
  93 void
  94 tuiDeleteDataContentWindows (void)
  95 {
  96   int i;
  97   TuiGenWinInfoPtr dataItemWinPtr;
  98
  99   for (i = 0; (i < dataWin->generic.contentSize); i++)
 100     {
 101       dataItemWinPtr = &((TuiWinContent)
 102                       dataWin->generic.content)[i]->whichElement.dataWindow;
 103       tuiDelwin (dataItemWinPtr->handle);
 104       dataItemWinPtr->handle = (WINDOW *) NULL;
 105       dataItemWinPtr->isVisible = FALSE;
 106     }
 107
 108   return;
 109 }                               /* tuiDeleteDataContentWindows */
 110
 111
 112 void
 113 tuiEraseDataContent (char *prompt)
 114 {
 115   werase (dataWin->generic.handle);
 116   checkAndDisplayHighlightIfNeeded (dataWin);
 117   if (prompt != (char *) NULL)
 118     {
 119       int halfWidth = (dataWin->generic.width - 2) / 2;
 120       int xPos;
 121
 122       if (strlen (prompt) >= halfWidth)
 123         xPos = 1;
 124       else
 125         xPos = halfWidth - strlen (prompt);
 126       mvwaddstr (dataWin->generic.handle,
 127                  (dataWin->generic.height / 2),
 128                  xPos,
 129                  prompt);
 130     }
 131   wrefresh (dataWin->generic.handle);
 132
 133   return;
 134 }                               /* tuiEraseDataContent */
 135
 136
 137 /*
 138    ** tuiDisplayAllData().
 139    **        This function displays the data that is in the data window's
 140    **        content.  It does not set the content.
 141  */
 142 void
 143 tuiDisplayAllData (void)
 144 {
 145   if (dataWin->generic.contentSize <= 0)
 146     tuiEraseDataContent (NO_DATA_STRING);
 147   else
 148     {
 149       tuiEraseDataContent ((char *) NULL);
 150       tuiDeleteDataContentWindows ();
 151       checkAndDisplayHighlightIfNeeded (dataWin);
 152       tuiDisplayRegistersFrom (0);
 153       /*
 154          ** Then display the other data
 155        */
 156       if (dataWin->detail.dataDisplayInfo.dataContent !=
 157           (TuiWinContent) NULL &&
 158           dataWin->detail.dataDisplayInfo.dataContentCount > 0)
 159         {
 160         }
 161     }
 162   return;
 163 }                               /* tuiDisplayAllData */
 164
 165
 166 /*
 167    ** tuiDisplayDataFromLine()
 168    **        Function to display the data starting at line, lineNo, in the
 169    **        data window.
 170  */
 171 void
 172 tuiDisplayDataFromLine (int lineNo)
 173 {
 174   int _lineNo = lineNo;
 175
 176   if (lineNo < 0)
 177     _lineNo = 0;
 178
 179   checkAndDisplayHighlightIfNeeded (dataWin);
 180
 181   /* there is no general data, force regs to display (if there are any) */
 182   if (dataWin->detail.dataDisplayInfo.dataContentCount <= 0)
 183     tuiDisplayRegistersFromLine (_lineNo, TRUE);
 184   else
 185     {
 186       int elementNo, startLineNo;
 187       int regsLastLine = tuiLastRegsLineNo ();
 188
 189
 190       /* display regs if we can */
 191       if (tuiDisplayRegistersFromLine (_lineNo, FALSE) < 0)
 192         {                       /*
 193                                    ** _lineNo is past the regs display, so calc where the
 194                                    ** start data element is
 195                                  */
 196           if (regsLastLine < _lineNo)
 197             {                   /* figure out how many lines each element is to obtain
 198                                    the start elementNo */
 199             }
 200         }
 201       else
 202         {                       /*
 203                                    ** calculate the starting element of the data display, given
 204                                    ** regsLastLine and how many lines each element is, up to
 205                                    ** _lineNo
 206                                  */
 207         }
 208       /* Now display the data , starting at elementNo */
 209     }
 210
 211   return;
 212 }                               /* tuiDisplayDataFromLine */
 213
 214
 215 /*
 216    ** tuiDisplayDataFrom()
 217    **        Display data starting at element elementNo
 218  */
 219 void
 220 tuiDisplayDataFrom (int elementNo, int reuseWindows)
 221 {
 222   int firstLine = (-1);
 223
 224   if (elementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 225     firstLine = tuiLineFromRegElementNo (elementNo);
 226   else
 227     {                           /* calculate the firstLine from the element number */
 228     }
 229
 230   if (firstLine >= 0)
 231     {
 232       tuiEraseDataContent ((char *) NULL);
 233       if (!reuseWindows)
 234         tuiDeleteDataContentWindows ();
 235       tuiDisplayDataFromLine (firstLine);
 236     }
 237
 238   return;
 239 }                               /* tuiDisplayDataFrom */
 240
 241
 242 /*
 243    ** tuiRefreshDataWin()
 244    **        Function to redisplay the contents of the data window.
 245  */
 246 void
 247 tuiRefreshDataWin (void)
 248 {
 249   tuiEraseDataContent ((char *) NULL);
 250   if (dataWin->generic.contentSize > 0)
 251     {
 252       int firstElement = tuiFirstDataItemDisplayed ();
 253
 254       if (firstElement >= 0)    /* re-use existing windows */
 255         tuiDisplayDataFrom (firstElement, TRUE);
 256     }
 257
 258   return;
 259 }                               /* tuiRefreshDataWin */
 260
 261
 262 /*
 263    ** tuiCheckDataValues().
 264    **        Function to check the data values and hilite any that have changed
 265  */
 266 void
 267 tuiCheckDataValues (struct frame_info *frame)
 268 {
 269   tuiCheckRegisterValues (frame);
 270
 271   /* Now check any other data values that there are */
 272   if (m_winPtrNotNull (dataWin) && dataWin->generic.isVisible)
 273     {
 274       int i;
 275
 276       for (i = 0; dataWin->detail.dataDisplayInfo.dataContentCount; i++)
 277         {
 278 #ifdef LATER
 279           TuiDataElementPtr dataElementPtr;
 280           TuiGenWinInfoPtr dataItemWinPtr;
 281           Opaque newValue;
 282
 283           dataItemPtr = &dataWin->detail.dataDisplayInfo.
 284             dataContent[i]->whichElement.dataWindow;
 285           dataElementPtr = &((TuiWinContent)
 286                              dataItemWinPtr->content)[0]->whichElement.data;
 287           if value
 288             has changed (dataElementPtr, frame, &newValue)
 289             {
 290               dataElementPtr->value = newValue;
 291               update the display with the new value, hiliting it.
 292             }
 293 #endif
 294         }
 295     }
 296 }                               /* tuiCheckDataValues */
 297
 298
 299 /*
 300    ** tui_vCheckDataValues().
 301    **        Function to check the data values and hilite any that have
 302    **        changed with args in a va_list
 303  */
 304 void
 305 tui_vCheckDataValues (va_list args)
 306 {
 307   struct frame_info *frame = va_arg (args, struct frame_info *);
 308
 309   tuiCheckDataValues (frame);
 310
 311   return;
 312 }                               /* tui_vCheckDataValues */
 313
 314
 315 /*
 316    ** tuiVerticalDataScroll()
 317    **        Scroll the data window vertically forward or backward.
 318  */
 319 void
 320 tuiVerticalDataScroll (TuiScrollDirection scrollDirection, int numToScroll)
 321 {
 322   int firstElementNo;
 323   int firstLine = (-1);
 324
 325   firstElementNo = tuiFirstDataItemDisplayed ();
 326   if (firstElementNo < dataWin->detail.dataDisplayInfo.regsContentCount)
 327     firstLine = tuiLineFromRegElementNo (firstElementNo);
 328   else
 329     {                           /* calculate the first line from the element number which is in
 330                                    ** the general data content
 331                                  */
 332     }
 333
 334   if (firstLine >= 0)
 335     {
 336       int lastElementNo, lastLine;
 337
 338       if (scrollDirection == FORWARD_SCROLL)
 339         firstLine += numToScroll;
 340       else
 341         firstLine -= numToScroll;
 342       tuiEraseDataContent ((char *) NULL);
 343       tuiDeleteDataContentWindows ();
 344       tuiDisplayDataFromLine (firstLine);
 345     }
 346
 347   return;
 348 }                               /* tuiVerticalDataScroll */
 349
 350
 351 /*****************************************
 352 ** STATIC LOCAL FUNCTIONS               **
 353 ******************************************/