Rename ListBox to Panel, matching dit.

1 files changed, 353 insertions, 0 deletions

diff --git a/Panel.c b/Panel.c
new file mode 100644
index 00000000..32da2110
--- /dev/null
+++ b/Panel.c
@@ -0,0 +1,353 @@
+/*
+htop - Panel.c
+(C) 2004-2006 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Object.h"
+#include "Panel.h"
+#include "Vector.h"
+#include "CRT.h"
+#include "RichString.h"
+
+#include <math.h>
+#include <stdbool.h>
+
+#include "debug.h"
+#include <assert.h>
+
+#include <curses.h>
+//#link curses
+
+/*{
+
+typedef struct Panel_ Panel;
+
+typedef enum HandlerResult_ {
+   HANDLED,
+   IGNORED,
+   BREAK_LOOP
+} HandlerResult;
+
+typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
+
+struct Panel_ {
+   Object super;
+   int x, y, w, h;
+   WINDOW* window;
+   Vector* items;
+   int selected;
+   int scrollV, scrollH;
+   int oldSelected;
+   bool needsRedraw;
+   RichString header;
+   Panel_EventHandler eventHandler;
+};
+
+extern char* PANEL_CLASS;
+
+}*/
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+#ifndef MAX
+#define MAX(a,b) ((a)>(b)?(a):(b))
+#endif
+
+/* private property */
+char* PANEL_CLASS = "Panel";
+
+Panel* Panel_new(int x, int y, int w, int h, char* type, bool owner) {
+   Panel* this;
+   this = malloc(sizeof(Panel));
+   Panel_init(this, x, y, w, h, type, owner);
+   return this;
+}
+
+void Panel_delete(Object* cast) {
+   Panel* this = (Panel*)cast;
+   Panel_done(this);
+   free(this);
+}
+
+void Panel_init(Panel* this, int x, int y, int w, int h, char* type, bool owner) {
+   Object* super = (Object*) this;
+   super->class = PANEL_CLASS;
+   super->delete = Panel_delete;
+   this->x = x;
+   this->y = y;
+   this->w = w;
+   this->h = h;
+   this->eventHandler = NULL;
+   this->items = Vector_new(type, owner, DEFAULT_SIZE);
+   this->scrollV = 0;
+   this->scrollH = 0;
+   this->selected = 0;
+   this->oldSelected = 0;
+   this->needsRedraw = true;
+   this->header.len = 0;
+}
+
+void Panel_done(Panel* this) {
+   assert (this != NULL);
+   RichString_delete(this->header);
+   Vector_delete(this->items);
+}
+
+inline void Panel_setRichHeader(Panel* this, RichString header) {
+   assert (this != NULL);
+
+   if (this->header.len > 0) {
+      RichString_delete(this->header);
+   }
+   this->header = header;
+   this->needsRedraw = true;
+}
+
+inline void Panel_setHeader(Panel* this, char* header) {
+   Panel_setRichHeader(this, RichString_quickString(CRT_colors[PANEL_HEADER_FOCUS], header));
+}
+
+void Panel_setEventHandler(Panel* this, Panel_EventHandler eh) {
+   this->eventHandler = eh;
+}
+
+void Panel_move(Panel* this, int x, int y) {
+   assert (this != NULL);
+
+   this->x = x;
+   this->y = y;
+   this->needsRedraw = true;
+}
+
+void Panel_resize(Panel* this, int w, int h) {
+   assert (this != NULL);
+
+   if (this->header.len > 0)
+      h--;
+   this->w = w;
+   this->h = h;
+   this->needsRedraw = true;
+}
+
+void Panel_prune(Panel* this) {
+   assert (this != NULL);
+
+   Vector_prune(this->items);
+   this->scrollV = 0;
+   this->selected = 0;
+   this->oldSelected = 0;
+   this->needsRedraw = true;
+}
+
+void Panel_add(Panel* this, Object* o) {
+   assert (this != NULL);
+
+   Vector_add(this->items, o);
+   this->needsRedraw = true;
+}
+
+void Panel_insert(Panel* this, int i, Object* o) {
+   assert (this != NULL);
+
+   Vector_insert(this->items, i, o);
+   this->needsRedraw = true;
+}
+
+void Panel_set(Panel* this, int i, Object* o) {
+   assert (this != NULL);
+
+   Vector_set(this->items, i, o);
+}
+
+Object* Panel_get(Panel* this, int i) {
+   assert (this != NULL);
+
+   return Vector_get(this->items, i);
+}
+
+Object* Panel_remove(Panel* this, int i) {
+   assert (this != NULL);
+
+   this->needsRedraw = true;
+   Object* removed = Vector_remove(this->items, i);
+   if (this->selected > 0 && this->selected >= Vector_size(this->items))
+      this->selected--;
+   return removed;
+}
+
+Object* Panel_getSelected(Panel* this) {
+   assert (this != NULL);
+
+   return Vector_get(this->items, this->selected);
+}
+
+void Panel_moveSelectedUp(Panel* this) {
+   assert (this != NULL);
+
+   Vector_moveUp(this->items, this->selected);
+   if (this->selected > 0)
+      this->selected--;
+}
+
+void Panel_moveSelectedDown(Panel* this) {
+   assert (this != NULL);
+
+   Vector_moveDown(this->items, this->selected);
+   if (this->selected + 1 < Vector_size(this->items))
+      this->selected++;
+}
+
+int Panel_getSelectedIndex(Panel* this) {
+   assert (this != NULL);
+
+   return this->selected;
+}
+
+int Panel_getSize(Panel* this) {
+   assert (this != NULL);
+
+   return Vector_size(this->items);
+}
+
+void Panel_setSelected(Panel* this, int selected) {
+   assert (this != NULL);
+
+   selected = MAX(0, MIN(Vector_size(this->items) - 1, selected));
+   this->selected = selected;
+}
+
+void Panel_draw(Panel* this, bool focus) {
+   assert (this != NULL);
+
+   int first, last;
+   int itemCount = Vector_size(this->items);
+   int scrollH = this->scrollH;
+   int y = this->y; int x = this->x;
+   first = this->scrollV;
+
+   if (this->h > itemCount) {
+      last = this->scrollV + itemCount;
+      move(y + last, x + 0);
+   } else {
+      last = MIN(itemCount, this->scrollV + this->h);
+   }
+   if (this->selected < first) {
+      first = this->selected;
+      this->scrollV = first;
+      this->needsRedraw = true;
+   }
+   if (this->selected >= last) {
+      last = MIN(itemCount, this->selected + 1);
+      first = MAX(0, last - this->h);
+      this->scrollV = first;
+      this->needsRedraw = true;
+   }
+   assert(first >= 0);
+   assert(last <= itemCount);
+
+   if (this->header.len > 0) {
+      int attr = focus
+               ? CRT_colors[PANEL_HEADER_FOCUS]
+               : CRT_colors[PANEL_HEADER_UNFOCUS];
+      attrset(attr);
+      mvhline(y, x, ' ', this->w);
+      if (scrollH < this->header.len) {
+         mvaddchnstr(y, x, this->header.chstr + scrollH,
+                     MIN(this->header.len - scrollH, this->w));
+      }
+      attrset(CRT_colors[RESET_COLOR]);
+      y++;
+   }
+   
+   int highlight = focus
+                 ? CRT_colors[PANEL_HIGHLIGHT_FOCUS]
+                 : CRT_colors[PANEL_HIGHLIGHT_UNFOCUS];
+
+   if (this->needsRedraw) {
+
+      for(int i = first, j = 0; j < this->h && i < last; i++, j++) {
+         Object* itemObj = Vector_get(this->items, i);
+         RichString itemRef = RichString_new();
+         itemObj->display(itemObj, &itemRef);
+         int amt = MIN(itemRef.len - scrollH, this->w);
+         if (i == this->selected) {
+            attrset(highlight);
+            RichString_setAttr(&itemRef, highlight);
+            mvhline(y + j, x+0, ' ', this->w);
+            if (amt > 0)
+               mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
+            attrset(CRT_colors[RESET_COLOR]);
+         } else {
+            mvhline(y+j, x+0, ' ', this->w);
+            if (amt > 0)
+               mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
+         }
+      }
+      for (int i = y + (last - first); i < y + this->h; i++)
+         mvhline(i, x+0, ' ', this->w);
+      this->needsRedraw = false;
+
+   } else {
+      Object* oldObj = Vector_get(this->items, this->oldSelected);
+      RichString oldRef = RichString_new();
+      oldObj->display(oldObj, &oldRef);
+      Object* newObj = Vector_get(this->items, this->selected);
+      RichString newRef = RichString_new();
+      newObj->display(newObj, &newRef);
+      mvhline(y+ this->oldSelected - this->scrollV, x+0, ' ', this->w);
+      if (scrollH < oldRef.len)
+         mvaddchnstr(y+ this->oldSelected - this->scrollV, x+0, oldRef.chstr + this->scrollH, MIN(oldRef.len - scrollH, this->w));
+      attrset(highlight);
+      mvhline(y+this->selected - this->scrollV, x+0, ' ', this->w);
+      RichString_setAttr(&newRef, highlight);
+      if (scrollH < newRef.len)
+         mvaddchnstr(y+this->selected - this->scrollV, x+0, newRef.chstr + this->scrollH, MIN(newRef.len - scrollH, this->w));
+      attrset(CRT_colors[RESET_COLOR]);
+   }
+   this->oldSelected = this->selected;
+   move(0, 0);
+}
+
+void Panel_onKey(Panel* this, int key) {
+   assert (this != NULL);
+   switch (key) {
+   case KEY_DOWN:
+      if (this->selected + 1 < Vector_size(this->items))
+         this->selected++;
+      break;
+   case KEY_UP:
+      if (this->selected > 0)
+         this->selected--;
+      break;
+   case KEY_LEFT:
+      if (this->scrollH > 0) {
+         this->scrollH -= 5;
+         this->needsRedraw = true;
+      }
+      break;
+   case KEY_RIGHT:
+      this->scrollH += 5;
+      this->needsRedraw = true;
+      break;
+   case KEY_PPAGE:
+      this->selected -= this->h;
+      if (this->selected < 0)
+         this->selected = 0;
+      break;
+   case KEY_NPAGE:
+      this->selected += this->h;
+      int size = Vector_size(this->items);
+      if (this->selected >= size)
+         this->selected = size - 1;
+      break;
+   case KEY_HOME:
+      this->selected = 0;
+      break;
+   case KEY_END:
+      this->selected = Vector_size(this->items) - 1;
+      break;
+   }
+}