riched20: Add an option to constrain the run search to the current para.

dlls/riched20/caret.c

@@ -331,7 +331,7 @@ BOOL ME_InternalDeleteText(ME_TextEditor *editor, ME_Cursor *start,
     {
       /* We aren't deleting anything in this run, so we will go back to the
        * last run we are deleting text in. */
-      ME_PrevRun(&c.pPara, &c.pRun);
+      ME_PrevRun(&c.pPara, &c.pRun, TRUE);
       c.nOffset = c.pRun->member.run.len;
     }
     run = &c.pRun->member.run;
@@ -1245,7 +1245,7 @@ ME_MoveCursorLines(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
   int x = ME_GetXForArrow(editor, pCursor);
 
   if (editor->bCaretAtEnd && !pCursor->nOffset)
-    if (!ME_PrevRun(&pOldPara, &pRun))
+    if (!ME_PrevRun(&pOldPara, &pRun, TRUE))
       return;
 
   if (nRelOfs == -1)

dlls/riched20/editor.c

@@ -1863,7 +1863,7 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
       cursor.nOffset++;
       if (cursor.nOffset == cursor.pRun->member.run.len)
       {
-        ME_NextRun(&cursor.pPara, &cursor.pRun);
+        ME_NextRun(&cursor.pPara, &cursor.pRun, TRUE);
         cursor.nOffset = 0;
       }
     }
@@ -1889,7 +1889,7 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
 
       if (nCurEnd == 0)
       {
-        ME_PrevRun(&pCurPara, &pCurItem);
+        ME_PrevRun(&pCurPara, &pCurItem, TRUE);
         nCurEnd = pCurItem->member.run.len;
       }
 
@@ -1938,7 +1938,7 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
         }
         if (nCurEnd - nMatched == 0)
         {
-          ME_PrevRun(&pCurPara, &pCurItem);
+          ME_PrevRun(&pCurPara, &pCurItem, TRUE);
           /* Don't care about pCurItem becoming NULL here; it's already taken
            * care of in the exterior loop condition */
           nCurEnd = pCurItem->member.run.len + nMatched;
@@ -1952,7 +1952,7 @@ ME_FindText(ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCH
       cursor.nOffset--;
       if (cursor.nOffset < 0)
       {
-        ME_PrevRun(&cursor.pPara, &cursor.pRun);
+        ME_PrevRun(&cursor.pPara, &cursor.pRun, TRUE);
         cursor.nOffset = cursor.pRun->member.run.len;
       }
     }
@@ -5109,7 +5109,7 @@ static BOOL ME_FindNextURLCandidate(ME_TextEditor *editor,
     }
 
     cursor.nOffset = 0;
-    if (!ME_NextRun(&cursor.pPara, &cursor.pRun))
+    if (!ME_NextRun(&cursor.pPara, &cursor.pRun, TRUE))
       goto done;
   }
 

dlls/riched20/editor.h

@@ -88,8 +88,8 @@ void ME_CharFormatFromLogFont(HDC hDC, const LOGFONTW *lf, CHARFORMAT2W *fmt) DE
 /* list.c */
 void ME_InsertBefore(ME_DisplayItem *diWhere, ME_DisplayItem *diWhat) DECLSPEC_HIDDEN;
 void ME_Remove(ME_DisplayItem *diWhere) DECLSPEC_HIDDEN;
-BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run) DECLSPEC_HIDDEN;
-BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run) DECLSPEC_HIDDEN;
+BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para) DECLSPEC_HIDDEN;
+BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para) DECLSPEC_HIDDEN;
 ME_DisplayItem *ME_FindItemBack(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;
 ME_DisplayItem *ME_FindItemFwd(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;
 ME_DisplayItem *ME_FindItemBackOrHere(ME_DisplayItem *di, ME_DIType nTypeOrClass) DECLSPEC_HIDDEN;

dlls/riched20/list.c

@@ -63,16 +63,18 @@ static BOOL ME_DITypesEqual(ME_DIType type, ME_DIType nTypeOrClass)
   }
 }
 
-/* Modifies run pointer to point to the next run, and modify the
- * paragraph pointer if moving into the next paragraph.
+/* Modifies run pointer to point to the next run.
+ * If all_para is FALSE constrain the search to the current para,
+ * otherwise modify the paragraph pointer if moving into the next paragraph.
  *
  * Returns TRUE if next run is found, otherwise returns FALSE. */
-BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run)
+BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para)
 {
   ME_DisplayItem *p = (*run)->next;
   while (p->type != diTextEnd)
   {
     if (p->type == diParagraph) {
+      if (!all_para) return FALSE;
       *para = p;
     } else if (p->type == diRun) {
       *run = p;
@@ -83,16 +85,18 @@ BOOL ME_NextRun(ME_DisplayItem **para, ME_DisplayItem **run)
   return FALSE;
 }
 
-/* Modifies run pointer to point to the previous run, and modify the
- * paragraph pointer if moving into the previous paragraph.
+/* Modifies run pointer to point to the previous run.
+ * If all_para is FALSE constrain the search to the current para,
+ * otherwise modify the paragraph pointer if moving into the previous paragraph.
  *
  * Returns TRUE if previous run is found, otherwise returns FALSE. */
-BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run)
+BOOL ME_PrevRun(ME_DisplayItem **para, ME_DisplayItem **run, BOOL all_para)
 {
   ME_DisplayItem *p = (*run)->prev;
   while (p->type != diTextStart)
   {
     if (p->type == diParagraph) {
+      if (!all_para) return FALSE;
       if (p->member.para.prev_para->type == diParagraph)
         *para = p->member.para.prev_para;
     } else if (p->type == diRun) {

dlls/riched20/para.c

@@ -364,7 +364,7 @@ ME_DisplayItem *ME_JoinParagraphs(ME_TextEditor *editor, ME_DisplayItem *tp,
   endCur.pRun = ME_FindItemFwd(pNext, diRun);
   endCur.nOffset = 0;
   startCur = endCur;
-  ME_PrevRun(&startCur.pPara, &startCur.pRun);
+  ME_PrevRun(&startCur.pPara, &startCur.pRun, TRUE);
   ME_SetCharFormat(editor, &startCur, &endCur, &fmt);
 
   if (!editor->bEmulateVersion10) { /* v4.1 */

dlls/riched20/writer.c

@@ -981,7 +981,7 @@ static BOOL ME_StreamOutRTF(ME_TextEditor *editor, ME_OutStream *pStream,
       if (!ME_StreamOutPrint(pStream, "}"))
         return FALSE;
     }
-  } while (cursor.pRun != endCur.pRun && ME_NextRun(&cursor.pPara, &cursor.pRun));
+  } while (cursor.pRun != endCur.pRun && ME_NextRun(&cursor.pPara, &cursor.pRun, TRUE));
 
   if (!ME_StreamOutMove(pStream, "}\0", 2))
     return FALSE;