ccmake: Teach dialog to support cache STRINGS property

This commit adds the ability to ccmake of cycling through cache options.
This uses the STRINGS property of the cache entry. The enter key will cycle
forward, and the right and left arrows will go up and down in the list.

4 files changed, 168 insertions, 3 deletions

diff --git a/Source/CursesDialog/CMakeLists.txt b/Source/CursesDialog/CMakeLists.txt
index 5efc2fb..548f5a5 100644
--- a/Source/CursesDialog/CMakeLists.txt
+++ b/Source/CursesDialog/CMakeLists.txt
@@ -11,6 +11,7 @@
 #=============================================================================
 
 set( CURSES_SRCS
+              CursesDialog/cmCursesOptionsWidget
               CursesDialog/cmCursesBoolWidget
               CursesDialog/cmCursesCacheEntryComposite
               CursesDialog/cmCursesDummyWidget
diff --git a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
index c58d037..249137f 100644
--- a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
+++ b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
@@ -10,6 +10,7 @@
   See the License for more information.
 ============================================================================*/
 #include "cmCursesCacheEntryComposite.h"
+#include "cmCursesOptionsWidget.h"
 #include "cmCursesStringWidget.h"
 #include "cmCursesLabelWidget.h"
 #include "cmCursesBoolWidget.h"
@@ -69,9 +70,27 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
         it.GetValue());
       break;
     case cmCacheManager::STRING:
-      this->Entry = new cmCursesStringWidget(this->EntryWidth, 1, 1, 1);
-      static_cast<cmCursesStringWidget*>(this->Entry)->SetString(
-        it.GetValue());
+      if(it.PropertyExists("STRINGS"))
+        {
+        cmCursesOptionsWidget* ow =
+          new cmCursesOptionsWidget(this->EntryWidth, 1, 1, 1);
+        this->Entry = ow;
+        std::vector<std::string> options;
+        cmSystemTools::ExpandListArgument(
+          std::string(it.GetProperty("STRINGS")), options);
+        for(std::vector<std::string>::iterator
+              si = options.begin(); si != options.end(); ++si)
+          {
+          ow->AddOption(*si);
+          }
+        ow->SetOption(it.GetValue());
+        }
+      else
+        {
+        this->Entry = new cmCursesStringWidget(this->EntryWidth, 1, 1, 1);
+        static_cast<cmCursesStringWidget*>(this->Entry)->SetString(
+          it.GetValue());
+        }
       break;
     case cmCacheManager::UNINITIALIZED:
       cmSystemTools::Error("Found an undefined variable: ", it.GetName());
diff --git a/Source/CursesDialog/cmCursesOptionsWidget.cxx b/Source/CursesDialog/cmCursesOptionsWidget.cxx
new file mode 100644
index 0000000..652b2df
--- /dev/null
+++ b/Source/CursesDialog/cmCursesOptionsWidget.cxx
@@ -0,0 +1,106 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#include "cmCursesOptionsWidget.h"
+#include "cmCursesMainForm.h"
+
+inline int ctrl(int z)
+{
+    return (z&037);
+}
+
+cmCursesOptionsWidget::cmCursesOptionsWidget(int width, int height,
+                                       int left, int top) :
+  cmCursesWidget(width, height, left, top)
+{
+  this->Type = cmCacheManager::BOOL; // this is a bit of a hack
+  // there is no option type, and string type causes ccmake to cast
+  // the widget into a string widget at some point.  BOOL is safe for
+  // now.
+  set_field_fore(this->Field,  A_NORMAL);
+  set_field_back(this->Field,  A_STANDOUT);
+  field_opts_off(this->Field,  O_STATIC);
+}
+
+bool cmCursesOptionsWidget::HandleInput(int& key, cmCursesMainForm*, WINDOW* w)
+{
+
+  // 10 == enter
+  if (key == 10 || key == KEY_ENTER)
+    {
+    this->NextOption();
+    touchwin(w);
+    wrefresh(w);
+    return true;
+    }
+  else if (key == KEY_LEFT || key == ctrl('b'))
+    {
+    touchwin(w);
+    wrefresh(w);
+    this->PreviousOption();
+    return true;
+    }
+  else if (key == KEY_RIGHT || key == ctrl('f'))
+    {
+    this->NextOption();
+    touchwin(w);
+    wrefresh(w);
+    return true;
+    }
+  else
+    {
+    return false;
+    }
+  return false;
+}
+
+void cmCursesOptionsWidget::AddOption(std::string const & option )
+{
+  this->Options.push_back(option);
+}
+
+void cmCursesOptionsWidget::NextOption()
+{
+  this->CurrentOption++;
+  if(this->CurrentOption > this->Options.size()-1)
+    {
+    this->CurrentOption = 0;
+    }
+  this->SetValue(this->Options[this->CurrentOption].c_str());
+}
+void cmCursesOptionsWidget::PreviousOption()
+{
+  if(this->CurrentOption == 0)
+    {
+    this->CurrentOption = this->Options.size()-1;
+    }
+  else
+    {
+    this->CurrentOption--;
+    }
+  this->SetValue(this->Options[this->CurrentOption].c_str());
+}
+
+void cmCursesOptionsWidget::SetOption(const char* value)
+{
+  this->CurrentOption = 0; // default to 0 index
+  this->SetValue(value);
+  int index = 0;
+  for(std::vector<std::string>::iterator i = this->Options.begin();
+      i != this->Options.end(); ++i)
+    {
+    if(*i == value)
+      {
+      this->CurrentOption = index;
+      }
+    index++;
+    }
+}
diff --git a/Source/CursesDialog/cmCursesOptionsWidget.h b/Source/CursesDialog/cmCursesOptionsWidget.h
new file mode 100644
index 0000000..b52ac9d
--- /dev/null
+++ b/Source/CursesDialog/cmCursesOptionsWidget.h
@@ -0,0 +1,39 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef __cmCursesOptionsWidget_h
+#define __cmCursesOptionsWidget_h
+
+#include "cmCursesWidget.h"
+class cmCursesMainForm;
+
+class cmCursesOptionsWidget : public cmCursesWidget
+{
+public:
+  cmCursesOptionsWidget(int width, int height, int left, int top);
+
+  // Description:
+  // Handle user input. Called by the container of this widget
+  // when this widget has focus. Returns true if the input was
+  // handled.
+  virtual bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w);
+  void SetOption(const char*);
+  void AddOption(std::string const &);
+  void NextOption();
+  void PreviousOption();
+protected:
+  cmCursesOptionsWidget(const cmCursesOptionsWidget& from);
+  void operator=(const cmCursesOptionsWidget&);
+  std::vector<std::string> Options;
+  std::vector<std::string>::size_type CurrentOption;
+};
+
+#endif // __cmCursesOptionsWidget_h