1 files changed, 84 insertions, 0 deletions
diff --git a/dw/findtext.hh b/dw/findtext.hh
new file mode 100644
index 0000000..c680348
--- /dev/null
+++ b/dw/findtext.hh
@@ -0,0 +1,84 @@
+#ifndef __DW_FINDTEXT_STATE_H__
+#define __DW_FINDTEXT_STATE_H__
+
+#ifndef __INCLUDED_FROM_DW_CORE_HH__
+#   error Do not include this file directly, use "core.hh" instead.
+#endif
+
+#include <ctype.h>
+
+namespace dw {
+namespace core {
+
+class FindtextState
+{
+public:
+   typedef enum {
+      /** \brief The next occurrence of the pattern has been found. */
+      SUCCESS,
+
+      /**
+       * \brief There is no further occurrence of the pattern, instead, the
+       *    first occurrence has been selected.
+       */
+      RESTART,
+
+      /** \brief The patten does not at all occur in the text. */
+      NOT_FOUND
+   } Result;
+
+private:
+   /**
+    * \brief The key used for the last search.
+    *
+    * If dw::core::Findtext::search is called with the same key, the search
+    * is continued, otherwise it is restarted.
+    */
+   char *key;
+
+   /** \brief Whether the last search was case sensitive. */
+   bool caseSens;
+
+   /** \brief The table used for KMP search. */
+   int *nexttab;
+
+   /** \brief The top of the widget tree, in which the search is done.
+    *
+    * From this, the iterator will be constructed. Set by
+    * dw::core::Findtext::widget
+    */
+   Widget *widget;
+
+   /** \brief The position from where the next search will start. */
+   CharIterator *iterator;
+
+   /**
+    * \brief The position from where the characters are highlighted.
+    *
+    * NULL, when no text is highlighted.
+    */
+   CharIterator *hlIterator;
+
+   static const char* rev(const char* _str); /* reverse a C string */
+
+   static int *createNexttab (const char *needle,bool caseSens,bool backwards);
+   bool unhighlight ();
+   bool search0 (bool backwards, bool firstTrial);
+
+   inline static bool charsEqual (char c1, char c2, bool caseSens)
+   { return caseSens ? c1 == c2 : tolower (c1) == tolower (c2) ||
+      (isspace (c1) && isspace (c2)); }
+
+public:
+   FindtextState ();
+   ~FindtextState ();
+
+   void setWidget (Widget *widget);
+   Result search (const char *key, bool caseSens, bool backwards);
+   void resetSearch ();
+};
+
+} // namespace core
+} // namespace dw
+
+#endif // __DW_FINDTEXT_STATE_H__