htop/ColumnsPanel.c at master · GrazerComputerClub/htop · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
htop - ColumnsPanel.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/

#include "ColumnsPanel.h"
#include "Platform.h"

#include "StringUtils.h"
#include "ListItem.h"
#include "CRT.h"

#include <assert.h>
#include <stdlib.h>
#include <ctype.h>

/*{
#include "Panel.h"
#include "Settings.h"

typedef struct ColumnsPanel_ {
   Panel super;

   Settings* settings;
   bool moving;
} ColumnsPanel;

}*/

static const char* const ColumnsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  ", NULL};

static void ColumnsPanel_delete(Object* object) {
   Panel* super = (Panel*) object;
   ColumnsPanel* this = (ColumnsPanel*) object;
   Panel_done(super);
   free(this);
}

static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
   ColumnsPanel* const this = (ColumnsPanel*) super;

   int selected = Panel_getSelectedIndex(super);
   HandlerResult result = IGNORED;
   int size = Panel_size(super);

   switch(ch) {
      case 0x0a:
      case 0x0d:
      case KEY_ENTER:
      case KEY_MOUSE:
      case KEY_RECLICK:
      {
         if (selected < size - 1) {
            this->moving = !(this->moving);
            Panel_setSelectionColor(super, this->moving ? CRT_colors[PANEL_SELECTION_FOLLOW] : CRT_colors[PANEL_SELECTION_FOCUS]);
            ((ListItem*)Panel_getSelected(super))->moving = this->moving;
            result = HANDLED;
         }
         break;
      }
      case KEY_UP:
      {
         if (!this->moving) {
            break;
         }
      }
         /* else fallthrough */
      case KEY_F(7):
      case '[':
      case '-':
      {
         if (selected < size - 1)
            Panel_moveSelectedUp(super);
         result = HANDLED;
         break;
      }
      case KEY_DOWN:
      {
         if (!this->moving) {
            break;
         }
      }
         /* else fallthrough */
      case KEY_F(8):
      case ']':
      case '+':
      {
         if (selected < size - 2)
            Panel_moveSelectedDown(super);
         result = HANDLED;
         break;
      }
      case KEY_F(9):
      case KEY_DC:
      {
         if (selected < size - 1) {
            Panel_remove(super, selected);
         }
         result = HANDLED;
         break;
      }
      default:
      {
         if (ch < 255 && isalpha(ch))
            result = Panel_selectByTyping(super, ch);
         if (result == BREAK_LOOP)
            result = IGNORED;
         break;
      }
   }
   if (result == HANDLED)
      ColumnsPanel_update(super);
   return result;
}

PanelClass ColumnsPanel_class = {
   .super = {
      .extends = Class(Panel),
      .delete = ColumnsPanel_delete
   },
   .eventHandler = ColumnsPanel_eventHandler
};

ColumnsPanel* ColumnsPanel_new(Settings* settings) {
   ColumnsPanel* this = AllocThis(ColumnsPanel);
   Panel* super = (Panel*) this;
   FunctionBar* fuBar = FunctionBar_new(ColumnsFunctions, NULL, NULL);
   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);

   this->settings = settings;
   this->moving = false;
   Panel_setHeader(super, "Active Columns");

   ProcessField* fields = this->settings->fields;
   for (; *fields; fields++) {
      if (Process_fields[*fields].name) {
         Panel_add(super, (Object*) ListItem_new(Process_fields[*fields].name, *fields));
      }
   }
   return this;
}

int ColumnsPanel_fieldNameToIndex(const char* name) {
   for (int j = 1; j <= Platform_numberOfFields; j++) {
      if (String_eq(name, Process_fields[j].name)) {
         return j;
      }
   }
   return -1;
}

void ColumnsPanel_update(Panel* super) {
   ColumnsPanel* this = (ColumnsPanel*) super;
   int size = Panel_size(super);
   this->settings->changed = true;
   this->settings->fields = xRealloc(this->settings->fields, sizeof(ProcessField) * (size+1));
   this->settings->flags = 0;
   for (int i = 0; i < size; i++) {
      int key = ((ListItem*) Panel_get(super, i))->key;
      this->settings->fields[i] = key;
      this->settings->flags |= Process_fields[key].flags;
   }
   this->settings->fields[size] = 0;
}