htop/Action.c

/*
htop - Action.c
(C) 2015 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/

#include "Process.h"
#include "Panel.h"
#include "Action.h"
#include "ScreenManager.h"

/*{

#include "IncSet.h"
#include "Settings.h"
#include "UsersTable.h"

typedef enum {
   HTOP_OK = 0x00,
   HTOP_REFRESH = 0x01,
   HTOP_RECALCULATE = 0x03, // implies HTOP_REFRESH
   HTOP_SAVE_SETTINGS = 0x04,
   HTOP_KEEP_FOLLOWING = 0x08,
   HTOP_QUIT = 0x10,
   HTOP_REDRAW_BAR = 0x20,
   HTOP_UPDATE_PANELHDR = 0x41, // implies HTOP_REFRESH
} Htop_Reaction;

typedef Htop_Reaction (*Htop_Action)();

typedef struct State_ {
   IncSet* inc;
   Settings* settings;
   UsersTable* ut;
} State;

typedef bool(*Action_ForeachProcessFn)(Process*, size_t);

}*/

int Action_selectedPid(Panel* panel) {
   Process* p = (Process*) Panel_getSelected(panel);
   if (p) {
      return p->pid;
   }
   return -1;
}

bool Action_foreachProcess(Panel* panel, Action_ForeachProcessFn fn, int arg, bool* wasAnyTagged) {
   bool ok = true;
   bool anyTagged = false;
   for (int i = 0; i < Panel_size(panel); i++) {
      Process* p = (Process*) Panel_get(panel, i);
      if (p->tag) {
         ok = fn(p, arg) && ok;
         anyTagged = true;
      }
   }
   if (!anyTagged) {
      Process* p = (Process*) Panel_getSelected(panel);
      if (p) ok = fn(p, arg) && ok;
   }
   if (wasAnyTagged)
      *wasAnyTagged = anyTagged;
   return ok;
}

Object* Action_pickFromVector(Panel* panel, Panel* list, int x, const char** keyLabels, Header* header) {
   int y = panel->y;
   const char* fuKeys[] = {"Enter", "Esc", NULL};
   int fuEvents[] = {13, 27};
   ScreenManager* scr = ScreenManager_new(0, y, 0, -1, HORIZONTAL, header, false);
   scr->allowFocusChange = false;
   ScreenManager_add(scr, list, FunctionBar_new(keyLabels, fuKeys, fuEvents), x - 1);
   ScreenManager_add(scr, panel, NULL, -1);
   Panel* panelFocus;
   int ch;
   bool unfollow = false;
   int pid = Action_selectedPid(panel);
   if (header->pl->following == -1) {
      header->pl->following = pid;
      unfollow = true;
   }
   ScreenManager_run(scr, &panelFocus, &ch);
   if (unfollow) {
      header->pl->following = -1;
   }
   ScreenManager_delete(scr);
   Panel_move(panel, 0, y);
   Panel_resize(panel, COLS, LINES-y-1);
   if (panelFocus == list && ch == 13) {
      Process* selected = (Process*)Panel_getSelected(panel);
      if (selected && selected->pid == pid)
         return Panel_getSelected(list);
      else
         beep();
   }
   return NULL;
}