1 files changed, 142 insertions, 0 deletions
diff --git a/AvailableColumnsPanel.c b/AvailableColumnsPanel.c
new file mode 100644
index 0000000..545ef7d
--- /dev/null
+++ b/AvailableColumnsPanel.c
@@ -0,0 +1,142 @@
+/*
+htop - AvailableColumnsPanel.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "AvailableColumnsPanel.h"
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "ColumnsPanel.h"
+#include "DynamicColumn.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "Platform.h"
+#include "Process.h"
+#include "ProvideCurses.h"
+#include "RowField.h"
+#include "XUtils.h"
+
+
+static const char* const AvailableColumnsFunctions[] = {"      ", "      ", "      ", "      ", "Add   ", "      ", "      ", "      ", "      ", "Done  ", NULL};
+
+static void AvailableColumnsPanel_delete(Object* object) {
+   Panel* super = (Panel*) object;
+   AvailableColumnsPanel* this = (AvailableColumnsPanel*) object;
+   Panel_done(super);
+   free(this);
+}
+
+static void AvailableColumnsPanel_insert(AvailableColumnsPanel* this, int at, int key) {
+   const char* name;
+   if (key >= ROW_DYNAMIC_FIELDS)
+      name = DynamicColumn_name(key);
+   else
+      name = Process_fields[key].name;
+   Panel_insert(this->columns, at, (Object*) ListItem_new(name, key));
+}
+
+static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
+   AvailableColumnsPanel* this = (AvailableColumnsPanel*) super;
+   HandlerResult result = IGNORED;
+
+   switch (ch) {
+      case 13:
+      case KEY_ENTER:
+      case KEY_F(5): {
+         const ListItem* selected = (ListItem*) Panel_getSelected(super);
+         if (!selected)
+            break;
+
+         int at = Panel_getSelectedIndex(this->columns);
+         AvailableColumnsPanel_insert(this, at, selected->key);
+         Panel_setSelected(this->columns, at + 1);
+         ColumnsPanel_update(this->columns);
+         result = HANDLED;
+         break;
+      }
+      default:
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
+            result = Panel_selectByTyping(super, ch);
+         break;
+   }
+   return result;
+}
+
+const PanelClass AvailableColumnsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = AvailableColumnsPanel_delete
+   },
+   .eventHandler = AvailableColumnsPanel_eventHandler
+};
+
+static void AvailableColumnsPanel_addDynamicColumn(ht_key_t key, void* value, void* data) {
+   const DynamicColumn* column = (const DynamicColumn*) value;
+   if (column->table) /* DynamicScreen, handled differently */
+      return;
+   AvailableColumnsPanel* this = (AvailableColumnsPanel*) data;
+   const char* title = column->heading ? column->heading : column->name;
+   const char* text = column->description ? column->description : column->caption;
+   char description[256];
+   if (text)
+      xSnprintf(description, sizeof(description), "%s - %s", title, text);
+   else
+      xSnprintf(description, sizeof(description), "%s", title);
+   Panel_add(&this->super, (Object*) ListItem_new(description, key));
+}
+
+// Handle DynamicColumns entries in the AvailableColumnsPanel
+static void AvailableColumnsPanel_addDynamicColumns(AvailableColumnsPanel* this, Hashtable* dynamicColumns) {
+   assert(dynamicColumns);
+   Hashtable_foreach(dynamicColumns, AvailableColumnsPanel_addDynamicColumn, this);
+}
+
+// Handle remaining Platform Meter entries in the AvailableColumnsPanel
+static void AvailableColumnsPanel_addPlatformColumns(AvailableColumnsPanel* this) {
+   for (int i = 1; i < LAST_PROCESSFIELD; i++) {
+      if (i != COMM && Process_fields[i].description) {
+         char description[256];
+         xSnprintf(description, sizeof(description), "%s - %s", Process_fields[i].name, Process_fields[i].description);
+         Panel_add(&this->super, (Object*) ListItem_new(description, i));
+      }
+   }
+}
+
+// Handle DynamicColumns entries associated with DynamicScreens
+static void AvailableColumnsPanel_addDynamicScreens(AvailableColumnsPanel* this, const char* screen) {
+   Platform_addDynamicScreenAvailableColumns(&this->super, screen);
+}
+
+void AvailableColumnsPanel_fill(AvailableColumnsPanel* this, const char* dynamicScreen, Hashtable* dynamicColumns) {
+   Panel* super = (Panel*) this;
+   Panel_prune(super);
+   if (dynamicScreen) {
+      AvailableColumnsPanel_addDynamicScreens(this, dynamicScreen);
+   } else {
+      AvailableColumnsPanel_addPlatformColumns(this);
+      AvailableColumnsPanel_addDynamicColumns(this, dynamicColumns);
+   }
+}
+
+AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns, Hashtable* dynamicColumns) {
+   AvailableColumnsPanel* this = AllocThis(AvailableColumnsPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(AvailableColumnsFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+   Panel_setHeader(super, "Available Columns");
+
+   this->columns = columns;
+   AvailableColumnsPanel_fill(this, NULL, dynamicColumns);
+
+   return this;
+}