htop/AvailableColumnsPanel.c

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/*
htop - AvailableColumnsPanel.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
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in the source distribution for its full text.
*/
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#include "AvailableColumnsPanel.h"
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#include <assert.h>
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#include <ctype.h>
#include <stdbool.h>
#include <stdlib.h>
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#include "ColumnsPanel.h"
#include "DynamicColumn.h"
#include "FunctionBar.h"
#include "Hashtable.h"
#include "ListItem.h"
#include "Object.h"
#include "Process.h"
#include "ProvideCurses.h"
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#include "XUtils.h"
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static const char* const AvailableColumnsFunctions[] = {" ", " ", " ", " ", "Add ", " ", " ", " ", " ", "Done ", NULL};
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static void AvailableColumnsPanel_delete(Object* object) {
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Panel* super = (Panel*) object;
AvailableColumnsPanel* this = (AvailableColumnsPanel*) object;
Panel_done(super);
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free(this);
}
static void AvailableColumnsPanel_insert(AvailableColumnsPanel* this, int at, int key) {
const char* name;
if (key >= LAST_PROCESSFIELD)
name = DynamicColumn_init(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) {
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AvailableColumnsPanel* this = (AvailableColumnsPanel*) super;
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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);
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ColumnsPanel_update(this->columns);
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result = HANDLED;
break;
}
default:
{
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if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
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result = Panel_selectByTyping(super, ch);
break;
}
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}
return result;
}
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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;
Panel* super = (Panel*) data;
const char* title = column->caption ? column->caption : column->heading;
if (!title)
title = column->name; // fallback to the only mandatory field
char description[256];
xSnprintf(description, sizeof(description), "%s - %s", title, column->description);
Panel_add(super, (Object*) ListItem_new(description, key));
}
// Handle DynamicColumns entries in the AvailableColumnsPanel
static void AvailableColumnsPanel_addDynamicColumns(Panel* super, Hashtable* dynamicColumns) {
assert(dynamicColumns);
Hashtable_foreach(dynamicColumns, AvailableColumnsPanel_addDynamicColumn, super);
}
// Handle remaining Platform Meter entries in the AvailableColumnsPanel
static void AvailableColumnsPanel_addPlatformColumn(Panel* super) {
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(super, (Object*) ListItem_new(description, i));
}
}
}
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");
AvailableColumnsPanel_addPlatformColumn(super);
AvailableColumnsPanel_addDynamicColumns(super, dynamicColumns);
this->columns = columns;
return this;
}