htop/MainPanel.c

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/*
htop - ColumnsPanel.c
(C) 2004-2015 Hisham H. Muhammad
(C) 2020 Red Hat, Inc. All Rights Reserved.
Released under the GNU GPLv2, see the COPYING file
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in the source distribution for its full text.
*/
#include "MainPanel.h"
#include <ctype.h>
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#include <stdlib.h>
#include "CRT.h"
#include "FunctionBar.h"
#include "Platform.h"
#include "Process.h"
#include "ProcessList.h"
#include "ProvideCurses.h"
#include "Settings.h"
#include "XUtils.h"
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static const char* const MainFunctions[] = {"Help ", "Setup ", "Search", "Filter", "Tree ", "SortBy", "Nice -", "Nice +", "Kill ", "Quit ", NULL};
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void MainPanel_updateTreeFunctions(MainPanel* this, bool mode) {
FunctionBar* bar = MainPanel_getFunctionBar(this);
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if (mode) {
FunctionBar_setLabel(bar, KEY_F(5), "Sorted");
FunctionBar_setLabel(bar, KEY_F(6), "Collap");
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} else {
FunctionBar_setLabel(bar, KEY_F(5), "Tree ");
FunctionBar_setLabel(bar, KEY_F(6), "SortBy");
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}
}
void MainPanel_pidSearch(MainPanel* this, int ch) {
Panel* super = (Panel*) this;
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pid_t pid = ch - 48 + this->pidSearch;
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for (int i = 0; i < Panel_size(super); i++) {
Process* p = (Process*) Panel_get(super, i);
if (p && p->pid == pid) {
Panel_setSelected(super, i);
break;
}
}
this->pidSearch = pid * 10;
if (this->pidSearch > 10000000) {
this->pidSearch = 0;
}
}
static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
MainPanel* this = (MainPanel*) super;
HandlerResult result = IGNORED;
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Htop_Reaction reaction = HTOP_OK;
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if (EVENT_IS_HEADER_CLICK(ch)) {
int x = EVENT_HEADER_CLICK_GET_X(ch);
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const ProcessList* pl = this->state->pl;
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Settings* settings = this->state->settings;
int hx = super->scrollH + x + 1;
ProcessField field = ProcessList_keyAt(pl, hx);
if (field == settings->sortKey) {
Settings_invertSortOrder(settings);
settings->treeView = false;
} else {
reaction |= Action_setSortKey(settings, field);
}
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reaction |= HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_SAVE_SETTINGS;
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result = HANDLED;
} else if (ch != ERR && this->inc->active) {
bool filterChanged = IncSet_handleKey(this->inc, ch, super, (IncMode_GetPanelValue) MainPanel_getValue, NULL);
if (filterChanged) {
this->state->pl->incFilter = IncSet_filter(this->inc);
reaction = HTOP_REFRESH | HTOP_REDRAW_BAR;
}
if (this->inc->found) {
reaction |= Action_follow(this->state);
reaction |= HTOP_KEEP_FOLLOWING;
}
result = HANDLED;
} else if (ch == 27) {
return HANDLED;
} else if (ch != ERR && ch > 0 && ch < KEY_MAX && this->keys[ch]) {
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reaction |= (this->keys[ch])(this->state);
result = HANDLED;
} else if (0 < ch && ch < 255 && isdigit((unsigned char)ch)) {
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MainPanel_pidSearch(this, ch);
} else {
if (ch != ERR) {
this->pidSearch = 0;
} else {
reaction |= HTOP_KEEP_FOLLOWING;
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}
}
if (reaction & HTOP_REDRAW_BAR) {
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MainPanel_updateTreeFunctions(this, this->state->settings->treeView);
IncSet_drawBar(this->inc);
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if (this->state->pauseProcessUpdate) {
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FunctionBar_append("PAUSED", CRT_colors[PAUSED]);
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}
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}
if (reaction & HTOP_UPDATE_PANELHDR) {
ProcessList_printHeader(this->state->pl, Panel_getHeader(super));
}
if (reaction & HTOP_REFRESH) {
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result |= REDRAW;
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}
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if (reaction & HTOP_RECALCULATE) {
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result |= RESCAN;
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}
if (reaction & HTOP_SAVE_SETTINGS) {
this->state->settings->changed = true;
}
if (reaction & HTOP_QUIT) {
return BREAK_LOOP;
}
if (!(reaction & HTOP_KEEP_FOLLOWING)) {
this->state->pl->following = -1;
Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
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}
return result;
}
int MainPanel_selectedPid(MainPanel* this) {
Process* p = (Process*) Panel_getSelected((Panel*)this);
if (p) {
return p->pid;
}
return -1;
}
const char* MainPanel_getValue(MainPanel* this, int i) {
Process* p = (Process*) Panel_get((Panel*)this, i);
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return p ? p->comm : "";
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}
bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged) {
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Panel* super = (Panel*) this;
bool ok = true;
bool anyTagged = false;
for (int i = 0; i < Panel_size(super); i++) {
Process* p = (Process*) Panel_get(super, i);
if (p->tag) {
ok = fn(p, arg) && ok;
anyTagged = true;
}
}
if (!anyTagged) {
Process* p = (Process*) Panel_getSelected(super);
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if (p) {
ok &= fn(p, arg);
}
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}
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if (wasAnyTagged)
*wasAnyTagged = anyTagged;
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return ok;
}
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const PanelClass MainPanel_class = {
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.super = {
.extends = Class(Panel),
.delete = MainPanel_delete
},
.eventHandler = MainPanel_eventHandler
};
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MainPanel* MainPanel_new() {
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MainPanel* this = AllocThis(MainPanel);
Panel_init((Panel*) this, 1, 1, 1, 1, Class(Process), false, FunctionBar_new(MainFunctions, NULL, NULL));
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this->keys = xCalloc(KEY_MAX, sizeof(Htop_Action));
this->inc = IncSet_new(MainPanel_getFunctionBar(this));
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Action_setBindings(this->keys);
Platform_setBindings(this->keys);
return this;
}
void MainPanel_setState(MainPanel* this, State* state) {
this->state = state;
}
void MainPanel_delete(Object* object) {
Panel* super = (Panel*) object;
MainPanel* this = (MainPanel*) object;
Panel_done(super);
IncSet_delete(this->inc);
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free(this->keys);
free(this);
}