add change flag to help with cached values

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@516 57a11ea4-9604-0410-9ed3-97b8803252fd

src/register/basiccell.c

@@ -22,6 +22,7 @@ void xaccInitBasicCell (BasicCell *cell)
    cell->width = 0;
    cell->alignment = 0;
    cell->value = 0x0;
+   cell->changed = 0;
    cell->set_value = NULL;
    cell->enter_cell = NULL;
    cell->modify_verify = NULL;

src/register/basiccell.h

@@ -114,11 +114,12 @@
 
 typedef struct _BasicCell {
 
-  short width;     /* column width, in chars, not pixels */
-  short alignment; /* column text alignment */
-  char  input_output;  /* zero if output-only */
+  short width;           /* column width, in chars, not pixels */
+  short alignment;       /* column text alignment */
+  char  input_output;    /* zero if output-only */
 
-  char * value;   /* current value */
+  char * value;          /* current value */
+  unsigned int changed;  /* 2^32-1 if value modified */
 
   /* "virtual", overloaded set-value method */
   void         (*set_value)     (struct _BasicCell *,

src/register/register.c

@@ -41,7 +41,7 @@
 
 #define MAX_COLS 8
 
-/* ================================= */
+/* ============================================== */
 
 BasicRegister * xaccMallocBasicRegister (void)
 {
@@ -51,7 +51,7 @@ BasicRegister * xaccMallocBasicRegister (void)
    return reg;
 }
 
-/* ================================= */
+/* ============================================== */
 
 void xaccInitBasicRegister (BasicRegister *reg)
 {
@@ -188,4 +188,28 @@ void xaccInitBasicRegister (BasicRegister *reg)
    reg->table = table;
 }
 
+/* ============================================== */
+
+unsigned int
+xaccGetChangeFlag (BasicRegister *reg)
+{
+
+   unsigned int changed = 0;
+
+   changed |= MOD_DATE && reg->dateCell->cell.changed;
+   changed |= MOD_NUM  && reg->numCell->changed;
+   changed |= MOD_DESC && reg->descCell->cell.changed;
+   changed |= MOD_RECN && reg->recnCell->changed;
+   changed |= MOD_AMNT && reg->creditCell->cell.changed;
+   changed |= MOD_AMNT && reg->debitCell->cell.changed;
+   /* changed |= MOD_SHRS && reg->xxxxxxCell->cell.changed; */
+   /* changed |= MOD_PRIC && reg->xxxxxxCell->cell.changed; */
+   changed |= MOD_MEMO && reg->memoCell->changed;
+   changed |= MOD_ACTN && reg->actionCell->cell.changed;
+   changed |= MOD_XFRM && reg->xfrmCell->cell.changed;
+   /* changed |= MOD_XTO && reg->xtoCell->cell.changed; */
+
+   return changed;
+}
+
 /* ============ END OF FILE ===================== */

src/register/register.h

@@ -15,19 +15,36 @@
 #include "recncell.h"
 #include "textcell.h"
 
+/* modified flags -- indicate how values have been modified */
+#define MOD_NONE  0x000
+#define MOD_DATE  0x001
+#define MOD_NUM   0x002
+#define MOD_DESC  0x004
+#define MOD_RECN  0x008
+#define MOD_AMNT  0x010
+#define MOD_SHRS  0x020
+#define MOD_PRIC  0x040
+#define MOD_MEMO  0x080
+#define MOD_ACTN  0x100
+#define MOD_XFRM  0x200
+#define MOD_XTO   0x400
+#define MOD_NEW   0x800
+#define MOD_ALL   0xfff
+
 typedef struct _BasicRegister {
    Table         * table;
    CellBlock     * cursor;
    CellBlock     * header;
    DateCell      * dateCell;
    BasicCell     * numCell;
-   ComboCell     * actionCell;
-   ComboCell     * xfrmCell;
    QuickFillCell * descCell;
-   BasicCell     * memoCell;
    BasicCell     * recnCell;
    PriceCell     * creditCell;
    PriceCell     * debitCell;
+   BasicCell     * memoCell;
+   ComboCell     * actionCell;
+   ComboCell     * xfrmCell;
+
    PriceCell     * balanceCell;
 
 } BasicRegister;
@@ -35,6 +52,8 @@ typedef struct _BasicRegister {
 BasicRegister * xaccMallocBasicRegister (void);
 void            xaccInitBasicRegister (BasicRegister *);
 
+unsigned int    xaccGetChangeFlag (BasicRegister *);
+
 #endif __XACC_REGISTER_H__
 
 /* ============ END OF FILE ===================== */

src/register/table.c

@@ -354,6 +354,7 @@ void xaccMoveCursor (Table *table, int virt_row, int virt_col)
          if (cell) {
             jphys = j + table->current_cursor_col * table->tile_width;
             xaccSetBasicCellValue (cell, table->entries[iphys][jphys]);
+            cell->changed = 0;
          }
       }
    }
@@ -385,6 +386,7 @@ void xaccMoveCursorGUI (Table *table, int virt_row, int virt_col)
          for (j=0; j<table->tile_width; j++) {
             cell = table->cursor->cells[i][j];
             if (cell) {
+               cell->changed = 0;
                if (cell->move) {
                   (cell->move) (cell, -1, -1);
                }
@@ -476,11 +478,6 @@ verifyCursorPosition (Table *table, int phys_row, int phys_col)
    if ((virt_row != table->current_cursor_row) ||
        (virt_col != table->current_cursor_col)) {
 
-printf ("verify cursor bad cur %d %d new %d %d \n",
-table->current_cursor_row,
-table->current_cursor_col,
-virt_row, virt_col);
-
       /* before leaving, the current virtual position,
        * commit any edits that have been accumulated 
        * in the cursor */
@@ -655,7 +652,7 @@ enterCB (Widget mw, XtPointer cd, XtPointer cb)
    rel_row %= (arr->numRows);
    rel_col %= (arr->numCols);
 
-   printf ("enter %d %d \n", row, col);
+printf ("enter %d %d \n", row, col);
 
    /* since we are here, there must be a cell handler.
     * therefore, we accept entry into the cell by default, 
@@ -675,6 +672,7 @@ enterCB (Widget mw, XtPointer cd, XtPointer cb)
       if (val != retval) {
          if (table->entries[row][col]) free (table->entries[row][col]);
          table->entries[row][col] = retval;
+         (arr->cells[rel_row][rel_col])->changed = 0xffffffff;
          XbaeMatrixSetCell (mw, row, col, retval);
          XbaeMatrixRefreshCell (mw, row, col);
 
@@ -752,6 +750,7 @@ modifyCB (Widget mw, XtPointer cd, XtPointer cb)
          /* update data. bounds check done earlier */
          free (table->entries[row][col]);
          table->entries[row][col] = (char *) retval;
+         (arr->cells[rel_row][rel_col])->changed = 0xffffffff;
 
          /* if the callback modified the display string,
           * update the display cell as well */
@@ -806,9 +805,9 @@ leaveCB (Widget mw, XtPointer cd, XtPointer cb)
    rel_row %= (arr->numRows);
    rel_col %= (arr->numCols);
 
-   printf ("leave %d %d \n", row, col);
+printf ("leave %d %d \n", row, col);
 
-   /* by default, accept whateve the final roposed edit is */
+   /* by default, accept whatever the final proposed edit is */
    cbs->doit = True;
 
    /* OK, if there is a callback for this cell, call it */
@@ -820,16 +819,32 @@ leaveCB (Widget mw, XtPointer cd, XtPointer cb)
       retval = leave (arr->cells[rel_row][rel_col], val);
 
       newval = (char *) retval;
-      if (val == retval) newval = strdup (val);
       if (NULL == retval) newval = strdup (val);
+      if (val == retval) newval = strdup (val);
+
+      /* if the leave() routine declared a new string, lets use it */
+      if ( retval && (retval != val)) {
+         cbs->value = strdup (retval);
+      }
 
-      /* save whatever was returned */
-      if (table->entries[row][col]) free (table->entries[row][col]);
-      table->entries[row][col] = newval;
-      cbs->value = strdup (newval);
    } else {
-      if (table->entries[row][col]) free (table->entries[row][col]);
-      table->entries[row][col] = strdup (cbs->value);
+      newval = strdup (cbs->value);
+   }
+
+   /* save whatever was returned; but lets check for  
+    * changes to avoid roiling the cells too much */
+   if (table->entries[row][col]) {
+      if (strcmp (table->entries[row][col], newval)) {
+         free (table->entries[row][col]);
+         table->entries[row][col] = newval;
+         (arr->cells[rel_row][rel_col])->changed = 0xffffffff;
+      } else {
+         /* leave() allocated memory, which we will not be using ... */
+         free (newval);
+      }
+   } else {
+      table->entries[row][col] = newval;
+      (arr->cells[rel_row][rel_col])->changed = 0xffffffff;
    }
 }