htop/ColumnsPanel.c

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/*
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.
*/
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#include "ColumnsPanel.h"
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#include "String.h"
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#include <assert.h>
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#include <stdlib.h>
#include <ctype.h>
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/*{
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#include "Panel.h"
#include "Settings.h"
#include "ScreenManager.h"
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typedef struct ColumnsPanel_ {
Panel super;
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Settings* settings;
ScreenManager* scr;
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} ColumnsPanel;
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}*/
static void ColumnsPanel_delete(Object* object) {
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Panel* super = (Panel*) object;
ColumnsPanel* this = (ColumnsPanel*) object;
Panel_done(super);
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free(this);
}
static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
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int selected = Panel_getSelectedIndex(super);
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HandlerResult result = IGNORED;
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int size = Panel_size(super);
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switch(ch) {
case KEY_F(7):
case '[':
case '-':
{
if (selected < size - 1)
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Panel_moveSelectedUp(super);
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result = HANDLED;
break;
}
case KEY_F(8):
case ']':
case '+':
{
if (selected < size - 2)
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Panel_moveSelectedDown(super);
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result = HANDLED;
break;
}
case KEY_F(9):
case KEY_DC:
{
if (selected < size - 1) {
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Panel_remove(super, selected);
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}
result = HANDLED;
break;
}
default:
{
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if (isalpha(ch))
result = Panel_selectByTyping(super, ch);
if (result == BREAK_LOOP)
result = IGNORED;
break;
}
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}
if (result == HANDLED)
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ColumnsPanel_update(super);
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return result;
}
PanelClass ColumnsPanel_class = {
.super = {
.extends = Class(Panel),
.delete = ColumnsPanel_delete
},
.eventHandler = ColumnsPanel_eventHandler
};
ColumnsPanel* ColumnsPanel_new(Settings* settings, ScreenManager* scr) {
ColumnsPanel* this = AllocThis(ColumnsPanel);
Panel* super = (Panel*) this;
Panel_init(super, 1, 1, 1, 1, Class(ListItem), true);
this->settings = settings;
this->scr = scr;
Panel_setHeader(super, "Active Columns");
ProcessField* fields = this->settings->pl->fields;
for (; *fields; fields++) {
Panel_add(super, (Object*) ListItem_new(Process_fieldNames[*fields], 0));
}
return this;
}
int ColumnsPanel_fieldNameToIndex(const char* name) {
for (int j = 1; j <= LAST_PROCESSFIELD; j++) {
if (String_eq(name, Process_fieldNames[j])) {
return j;
}
}
return 0;
}
void ColumnsPanel_update(Panel* super) {
ColumnsPanel* this = (ColumnsPanel*) super;
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int size = Panel_size(super);
this->settings->changed = true;
// FIXME: this is crappily inefficient
free(this->settings->pl->fields);
this->settings->pl->fields = (ProcessField*) malloc(sizeof(ProcessField) * (size+1));
for (int i = 0; i < size; i++) {
char* text = ((ListItem*) Panel_get(super, i))->value;
int j = ColumnsPanel_fieldNameToIndex(text);
if (j > 0)
this->settings->pl->fields[i] = j;
}
this->settings->pl->fields[size] = 0;
}