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/*
htop - MetersPanel.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "MetersPanel.h"
#include <stdlib.h>
#include "CRT.h"
#include "FunctionBar.h"
#include "Header.h"
#include "ListItem.h"
#include "Meter.h"
#include "Object.h"
#include "ProvideCurses.h"
// Note: In code the meters are known to have bar/text/graph "Modes", but in UI
// we call them "Styles".
static const char* const MetersFunctions[] = {"Style ", "Move ", " ", "Delete", "Done ", NULL};
static const char* const MetersKeys[] = {"Space", "Enter", " ", "Del", "F10"};
static const int MetersEvents[] = {' ', 13, ERR, KEY_DC, KEY_F(10)};
// We avoid UTF-8 arrows ← → here as they might display full-width on Chinese
// terminals, breaking our aligning.
// In <http://unicode.org/reports/tr11/>, arrows (U+2019..U+2199) are
// considered "Ambiguous characters".
static const char* const MetersMovingFunctions[] = {"Style ", "Lock ", "Up ", "Down ", "Left ", "Right ", " ", "Delete", "Done ", NULL};
static const char* const MetersMovingKeys[] = {"Space", "Enter", "Up", "Dn", "<-", "->", " ", "Del", "F10"};
static const int MetersMovingEvents[] = {' ', 13, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, ERR, KEY_DC, KEY_F(10)};
static FunctionBar* Meters_movingBar = NULL;
void MetersPanel_cleanup(void) {
if (Meters_movingBar) {
FunctionBar_delete(Meters_movingBar);
Meters_movingBar = NULL;
}
}
static void MetersPanel_delete(Object* object) {
MetersPanel* this = (MetersPanel*) object;
Panel_done(&this->super);
free(this);
}
void MetersPanel_setMoving(MetersPanel* this, bool moving) {
Panel* super = &this->super;
this->moving = moving;
ListItem* selected = (ListItem*)Panel_getSelected(super);
if (selected) {
selected->moving = moving;
}
if (!moving) {
Panel_setSelectionColor(super, PANEL_SELECTION_FOCUS);
Panel_setDefaultBar(super);
} else {
Panel_setSelectionColor(super, PANEL_SELECTION_FOLLOW);
super->currentBar = Meters_movingBar;
}
}
static inline bool moveToNeighbor(MetersPanel* this, MetersPanel* neighbor, int selected) {
Panel* super = &this->super;
if (this->moving) {
if (neighbor) {
if (selected < Vector_size(this->meters)) {
MetersPanel_setMoving(this, false);
Meter* meter = (Meter*) Vector_take(this->meters, selected);
Panel_remove(super, selected);
Vector_insert(neighbor->meters, selected, meter);
Panel_insert(&(neighbor->super), selected, (Object*) Meter_toListItem(meter, false));
Panel_setSelected(&(neighbor->super), selected);
MetersPanel_setMoving(neighbor, true);
return true;
}
}
}
return false;
}
static HandlerResult MetersPanel_eventHandler(Panel* super, int ch) {
MetersPanel* this = (MetersPanel*) super;
int selected = Panel_getSelectedIndex(super);
HandlerResult result = IGNORED;
bool sideMove = false;
switch (ch) {
case 0x0a:
case 0x0d:
case KEY_ENTER:
if (!Vector_size(this->meters))
break;
MetersPanel_setMoving(this, !(this->moving));
result = HANDLED;
break;
case ' ':
case KEY_F(4):
case 't': {
if (!Vector_size(this->meters))
break;
Meter* meter = (Meter*) Vector_get(this->meters, selected);
MeterModeId mode = Meter_nextSupportedMode(meter);
Meter_setMode(meter, mode);
Panel_set(super, selected, (Object*) Meter_toListItem(meter, this->moving));
result = HANDLED;
break;
}
case KEY_UP:
if (!this->moving)
break;
/* else fallthrough */
case KEY_F(7):
case '[':
case '-':
Vector_moveUp(this->meters, selected);
Panel_moveSelectedUp(super);
result = HANDLED;
break;
case KEY_DOWN:
if (!this->moving)
break;
/* else fallthrough */
case KEY_F(8):
case ']':
case '+':
Vector_moveDown(this->meters, selected);
Panel_moveSelectedDown(super);
result = HANDLED;
break;
case KEY_RIGHT:
sideMove = moveToNeighbor(this, this->rightNeighbor, selected);
if (this->moving && !sideMove) {
// lock user here until it exits positioning-mode
result = HANDLED;
}
// if user is free, don't set HANDLED;
// let ScreenManager handle focus.
break;
case KEY_LEFT:
sideMove = moveToNeighbor(this, this->leftNeighbor, selected);
if (this->moving && !sideMove) {
result = HANDLED;
}
break;
case KEY_F(9):
case KEY_DC:
case KEY_DEL_MAC:
if (!Vector_size(this->meters))
break;
if (selected < Vector_size(this->meters)) {
Vector_remove(this->meters, selected);
Panel_remove(super, selected);
}
MetersPanel_setMoving(this, false);
result = HANDLED;
break;
}
if (result == HANDLED || sideMove) {
Header* header = this->scr->header;
this->settings->changed = true;
this->settings->lastUpdate++;
Header_calculateHeight(header);
ScreenManager_resize(this->scr);
}
return result;
}
const PanelClass MetersPanel_class = {
.super = {
.extends = Class(Panel),
.delete = MetersPanel_delete
},
.eventHandler = MetersPanel_eventHandler
};
MetersPanel* MetersPanel_new(Settings* settings, const char* header, Vector* meters, ScreenManager* scr) {
MetersPanel* this = AllocThis(MetersPanel);
Panel* super = &this->super;
FunctionBar* fuBar = FunctionBar_new(MetersFunctions, MetersKeys, MetersEvents);
if (!Meters_movingBar) {
Meters_movingBar = FunctionBar_new(MetersMovingFunctions, MetersMovingKeys, MetersMovingEvents);
}
Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
this->settings = settings;
this->meters = meters;
this->scr = scr;
this->moving = false;
this->rightNeighbor = NULL;
this->leftNeighbor = NULL;
Panel_setHeader(super, header);
for (int i = 0; i < Vector_size(meters); i++) {
const Meter* meter = (const Meter*) Vector_get(meters, i);
Panel_add(super, (Object*) Meter_toListItem(meter, false));
}
return this;
}
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