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330 lines (300 loc) · 8.89 KB
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/*
htop - ScreensPanel.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 "ScreensPanel.h"
#include "Platform.h"
#include "StringUtils.h"
#include "CRT.h"
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
/*{
#include "Panel.h"
#include "ScreenManager.h"
#include "ColumnsPanel.h"
#include "Settings.h"
#include "ListItem.h"
#ifndef SCREEN_NAME_LEN
#define SCREEN_NAME_LEN 20
#endif
typedef struct ScreensPanel_ {
Panel super;
ScreenManager* scr;
Settings* settings;
ColumnsPanel* columns;
char buffer[SCREEN_NAME_LEN + 1];
char* saved;
int cursor;
bool moving;
bool renaming;
} ScreensPanel;
typedef struct ScreenListItem_ {
ListItem super;
ScreenSettings* ss;
} ScreenListItem;
}*/
ObjectClass ScreenListItem_class = {
.extends = Class(ListItem),
.display = ListItem_display,
.delete = ListItem_delete,
.compare = ListItem_compare
};
ScreenListItem* ScreenListItem_new(const char* value, ScreenSettings* ss) {
ScreenListItem* this = AllocThis(ScreenListItem);
ListItem_init((ListItem*)this, value, 0);
this->ss = ss;
return this;
}
static const char* const ScreensFunctions[] = {" ", "Rename", " ", " ", "New ", " ", "MoveUp", "MoveDn", "Remove", "Done ", NULL};
static void ScreensPanel_delete(Object* object) {
Panel* super = (Panel*) object;
ScreensPanel* this = (ScreensPanel*) object;
Panel_done(super);
free(this);
}
static HandlerResult ScreensPanel_eventHandlerRenaming(Panel* super, int ch) {
ScreensPanel* const this = (ScreensPanel*) super;
//ListItem* item = (ListItem*)Panel_getSelected(super);
if (ch >= 32 && ch < 127 && ch != 61 && ch != 22) {
if (this->cursor < SCREEN_NAME_LEN - 1) {
this->buffer[this->cursor] = ch;
this->cursor++;
super->selectedLen = strlen(this->buffer);
Panel_setCursorToSelection(super);
}
} else {
switch(ch) {
case 127:
case KEY_BACKSPACE:
{
if (this->cursor > 0) {
this->cursor--;
this->buffer[this->cursor] = '\0';
super->selectedLen = strlen(this->buffer);
Panel_setCursorToSelection(super);
}
break;
}
case 0x0a:
case 0x0d:
case KEY_ENTER:
{
ListItem* item = (ListItem*) Panel_getSelected(super);
free(this->saved);
item->value = xStrdup(this->buffer);
this->renaming = false;
super->cursorOn = false;
Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
ScreensPanel_update(super);
break;
}
case 27: // Esc
{
ListItem* item = (ListItem*) Panel_getSelected(super);
item->value = this->saved;
this->renaming = false;
super->cursorOn = false;
Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
break;
}
}
}
return HANDLED;
}
static void startRenaming(Panel* super) {
ScreensPanel* const this = (ScreensPanel*) super;
ListItem* item = (ListItem*) Panel_getSelected(super);
this->renaming = true;
super->cursorOn = true;
char* name = item->value;
this->saved = name;
strncpy(this->buffer, name, SCREEN_NAME_LEN);
this->buffer[SCREEN_NAME_LEN] = '\0';
this->cursor = strlen(this->buffer);
item->value = this->buffer;
Panel_setSelectionColor(super, CRT_colors[PANEL_EDIT]);
super->selectedLen = strlen(this->buffer);
Panel_setCursorToSelection(super);
}
static void rebuildSettingsArray(Panel* super) {
ScreensPanel* const this = (ScreensPanel*) super;
int n = Panel_size(super);
free(this->settings->screens);
this->settings->screens = xMalloc(sizeof(ScreenSettings*) * (n + 1));
this->settings->screens[n] = NULL;
for (int i = 0; i < n; i++) {
ScreenListItem* item = (ScreenListItem*) Panel_get(super, i);
this->settings->screens[i] = item->ss;
}
}
static void addNewScreen(Panel* super) {
ScreensPanel* const this = (ScreensPanel*) super;
char* name = "New";
ScreenSettings* ss = Settings_newScreen(this->settings, name, "PID Command");
ScreenListItem* item = ScreenListItem_new(name, ss);
int idx = Panel_getSelectedIndex(super);
Panel_insert(super, idx + 1, (Object*) item);
Panel_setSelected(super, idx + 1);
}
static HandlerResult ScreensPanel_eventHandlerNormal(Panel* super, int ch) {
ScreensPanel* const this = (ScreensPanel*) super;
int selected = Panel_getSelectedIndex(super);
ScreenListItem* oldFocus = (ScreenListItem*) Panel_getSelected(super);
bool shouldRebuildArray = false;
HandlerResult result = IGNORED;
switch(ch) {
case 0x0a:
case 0x0d:
case KEY_ENTER:
case KEY_MOUSE:
case KEY_RECLICK:
{
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 EVENT_SET_SELECTED:
result = HANDLED;
break;
case KEY_NPAGE:
case KEY_PPAGE:
case KEY_HOME:
case KEY_END: {
Panel_onKey(super, ch);
break;
}
case KEY_F(2):
case KEY_CTRL('R'):
{
startRenaming(super);
result = HANDLED;
break;
}
case KEY_F(5):
case KEY_CTRL('N'):
{
addNewScreen(super);
startRenaming(super);
shouldRebuildArray = true;
result = HANDLED;
break;
}
case KEY_UP:
{
if (!this->moving) {
Panel_onKey(super, ch);
break;
}
/* else fallthrough */
}
case KEY_F(7):
case '[':
case '-':
{
Panel_moveSelectedUp(super);
shouldRebuildArray = true;
result = HANDLED;
break;
}
case KEY_DOWN:
{
if (!this->moving) {
Panel_onKey(super, ch);
break;
}
/* else fallthrough */
}
case KEY_F(8):
case ']':
case '+':
{
Panel_moveSelectedDown(super);
shouldRebuildArray = true;
result = HANDLED;
break;
}
case KEY_F(9):
//case KEY_DC:
{
if (Panel_size(super) > 1) {
Panel_remove(super, selected);
}
shouldRebuildArray = true;
result = HANDLED;
break;
}
default:
{
if (ch < 255 && isalpha(ch))
result = Panel_selectByTyping(super, ch);
if (result == BREAK_LOOP)
result = IGNORED;
break;
}
}
ScreenListItem* newFocus = (ScreenListItem*) Panel_getSelected(super);
if (oldFocus != newFocus) {
ColumnsPanel_fill(this->columns, newFocus->ss);
result = HANDLED;
}
if (shouldRebuildArray) {
rebuildSettingsArray(super);
}
if (result == HANDLED)
ScreensPanel_update(super);
return result;
}
static HandlerResult ScreensPanel_eventHandler(Panel* super, int ch) {
ScreensPanel* const this = (ScreensPanel*) super;
if (this->renaming) {
return ScreensPanel_eventHandlerRenaming(super, ch);
} else {
return ScreensPanel_eventHandlerNormal(super, ch);
}
}
PanelClass ScreensPanel_class = {
.super = {
.extends = Class(Panel),
.delete = ScreensPanel_delete
},
.eventHandler = ScreensPanel_eventHandler
};
ScreensPanel* ScreensPanel_new(Settings* settings) {
ScreensPanel* this = AllocThis(ScreensPanel);
Panel* super = (Panel*) this;
FunctionBar* fuBar = FunctionBar_new(ScreensFunctions, NULL, NULL);
Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
this->settings = settings;
this->columns = ColumnsPanel_new(settings->screens[0], &(settings->changed));
this->moving = false;
this->renaming = false;
super->cursorOn = false;
this->cursor = 0;
Panel_setHeader(super, "Screens");
for (unsigned int i = 0; i < settings->nScreens; i++) {
ScreenSettings* ss = settings->screens[i];
char* name = ss->name;
Panel_add(super, (Object*) ScreenListItem_new(name, ss));
}
return this;
}
void ScreensPanel_update(Panel* super) {
ScreensPanel* this = (ScreensPanel*) super;
int size = Panel_size(super);
this->settings->changed = true;
this->settings->screens = xRealloc(this->settings->screens, sizeof(char*) * (size+1));
for (int i = 0; i < size; i++) {
ScreenListItem* item = (ScreenListItem*) Panel_get(super, i);
ScreenSettings* ss = item->ss;
free(ss->name);
this->settings->screens[i] = ss;
ss->name = xStrdup(((ListItem*) item)->value);
}
this->settings->screens[size] = NULL;
}