Keep panel structure up-to-date as process list changes when headers are updated during the screen manager. Hopefully closes #3444533.

ColorsPanel.c

@@ -67,7 +67,7 @@ static HandlerResult ColorsPanel_EventHandler(Panel* super, int ch) {
       this->settings->changed = true;
       Header* header = this->settings->header;
       CRT_setColors(mark);
-      Panel* menu = (Panel*) Vector_get(this->scr->items, 0);
+      Panel* menu = (Panel*) Vector_get(this->scr->panels, 0);
       Header_draw(header);
       RichString_setAttr(&(super->header), CRT_colors[PANEL_HEADER_FOCUS]);
       RichString_setAttr(&(menu->header), CRT_colors[PANEL_HEADER_UNFOCUS]);

ProcessList.c

@@ -16,6 +16,7 @@ in the source distribution for its full text.
 #include "UsersTable.h"
 #include "Hashtable.h"
 #include "String.h"
+#include "Panel.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -109,6 +110,13 @@ typedef struct ProcessList_ {
    Hashtable* processTable;
    UsersTable* usersTable;
 
+   Panel* panel;
+   bool follow;
+   bool userOnly;
+   uid_t userId;
+   bool filtering;
+   const char* incFilter;
+
    int cpuCount;
    int totalTasks;
    int userlandThreads;
@@ -243,6 +251,10 @@ void ProcessList_delete(ProcessList* this) {
    free(this);
 }
 
+void ProcessList_setPanel(ProcessList* this, Panel* panel) {
+   this->panel = panel;
+}
+
 void ProcessList_invertSortOrder(ProcessList* this) {
    if (this->direction == 1)
       this->direction = -1;
@@ -888,3 +900,47 @@ void ProcessList_expandTree(ProcessList* this) {
       process->showChildren = true;
    }
 }
+
+void ProcessList_rebuildPanel(ProcessList* this, bool flags, bool follow, bool userOnly, uid_t userId, bool filtering, const char* incFilter) {
+   if (!flags) {
+      follow = this->follow;
+      userOnly = this->userOnly;
+      userId = this->userId;
+      filtering = this->filtering;
+      incFilter = this->incFilter;
+   } else {
+      this->follow = follow;
+      this->userOnly = userOnly;
+      this->userId = userId;
+      this->filtering = filtering;
+      this->incFilter = incFilter;
+   }
+
+   int currPos = Panel_getSelectedIndex(this->panel);
+   pid_t currPid = 0;
+   int currScrollV = this->panel->scrollV;
+   if (follow)
+      currPid = ProcessList_get(this, currPos)->pid;
+
+   Panel_prune(this->panel);
+   int size = ProcessList_size(this);
+   int idx = 0;
+   for (int i = 0; i < size; i++) {
+      bool hidden = false;
+      Process* p = ProcessList_get(this, i);
+
+      if ( (!p->show)
+         || (userOnly && (p->st_uid != userId))
+         || (filtering && !(String_contains_i(p->comm, incFilter))) )
+         hidden = true;
+
+      if (!hidden) {
+         Panel_set(this->panel, idx, (Object*)p);
+         if ((!follow && idx == currPos) || (follow && p->pid == currPid)) {
+            Panel_setSelected(this->panel, idx);
+            this->panel->scrollV = currScrollV;
+         }
+         idx++;
+      }
+   }
+}

ProcessList.h

@@ -19,6 +19,7 @@ in the source distribution for its full text.
 #include "UsersTable.h"
 #include "Hashtable.h"
 #include "String.h"
+#include "Panel.h"
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -111,6 +112,13 @@ typedef struct ProcessList_ {
    Hashtable* processTable;
    UsersTable* usersTable;
 
+   Panel* panel;
+   bool follow;
+   bool userOnly;
+   uid_t userId;
+   bool filtering;
+   const char* incFilter;
+
    int cpuCount;
    int totalTasks;
    int userlandThreads;
@@ -161,6 +169,8 @@ ProcessList* ProcessList_new(UsersTable* usersTable);
 
 void ProcessList_delete(ProcessList* this);
 
+void ProcessList_setPanel(ProcessList* this, Panel* panel);
+
 void ProcessList_invertSortOrder(ProcessList* this);
 
 void ProcessList_printHeader(ProcessList* this, RichString* header);
@@ -194,4 +204,6 @@ ProcessField ProcessList_keyAt(ProcessList* this, int at);
 
 void ProcessList_expandTree(ProcessList* this);
 
+void ProcessList_rebuildPanel(ProcessList* this, bool flags, bool follow, bool userOnly, uid_t userId, bool filtering, const char* incFilter);
+
 #endif

ScreenManager.c

@@ -31,13 +31,14 @@ typedef struct ScreenManager_ {
    int x2;
    int y2;
    Orientation orientation;
-   Vector* items;
+   Vector* panels;
    Vector* fuBars;
-   int itemCount;
+   int panelCount;
    const FunctionBar* fuBar;
    const Header* header;
    time_t lastScan;
    bool owner;
+   bool allowFocusChange;
 } ScreenManager;
 
 }*/
@@ -51,29 +52,30 @@ ScreenManager* ScreenManager_new(int x1, int y1, int x2, int y2, Orientation ori
    this->y2 = y2;
    this->fuBar = NULL;
    this->orientation = orientation;
-   this->items = Vector_new(PANEL_CLASS, owner, DEFAULT_SIZE, NULL);
+   this->panels = Vector_new(PANEL_CLASS, owner, DEFAULT_SIZE, NULL);
    this->fuBars = Vector_new(FUNCTIONBAR_CLASS, true, DEFAULT_SIZE, NULL);
-   this->itemCount = 0;
+   this->panelCount = 0;
    this->header = header;
    this->owner = owner;
+   this->allowFocusChange = true;
    return this;
 }
 
 void ScreenManager_delete(ScreenManager* this) {
-   Vector_delete(this->items);
+   Vector_delete(this->panels);
    Vector_delete(this->fuBars);
    free(this);
 }
 
 inline int ScreenManager_size(ScreenManager* this) {
-   return this->itemCount;
+   return this->panelCount;
 }
 
 void ScreenManager_add(ScreenManager* this, Panel* item, FunctionBar* fuBar, int size) {
    if (this->orientation == HORIZONTAL) {
       int lastX = 0;
-      if (this->itemCount > 0) {
+      if (this->panelCount > 0) {
-         Panel* last = (Panel*) Vector_get(this->items, this->itemCount - 1);
+         Panel* last = (Panel*) Vector_get(this->panels, this->panelCount - 1);
          lastX = last->x + last->w + 1;
       }
       if (size > 0) {
@@ -84,22 +86,22 @@ void ScreenManager_add(ScreenManager* this, Panel* item, FunctionBar* fuBar, int
       Panel_move(item, lastX, this->y1);
    }
    // TODO: VERTICAL
-   Vector_add(this->items, item);
+   Vector_add(this->panels, item);
    if (fuBar)
       Vector_add(this->fuBars, fuBar);
    else
       Vector_add(this->fuBars, FunctionBar_new(NULL, NULL, NULL));
    if (!this->fuBar && fuBar) this->fuBar = fuBar;
    item->needsRedraw = true;
-   this->itemCount++;
+   this->panelCount++;
 }
 
 Panel* ScreenManager_remove(ScreenManager* this, int idx) {
-   assert(this->itemCount > idx);
+   assert(this->panelCount > idx);
-   Panel* panel = (Panel*) Vector_remove(this->items, idx);
+   Panel* panel = (Panel*) Vector_remove(this->panels, idx);
    Vector_remove(this->fuBars, idx);
    this->fuBar = NULL;
-   this->itemCount--;
+   this->panelCount--;
    return panel;
 }
 
@@ -108,15 +110,15 @@ void ScreenManager_resize(ScreenManager* this, int x1, int y1, int x2, int y2) {
    this->y1 = y1;
    this->x2 = x2;
    this->y2 = y2;
-   int items = this->itemCount;
+   int panels = this->panelCount;
    int lastX = 0;
-   for (int i = 0; i < items - 1; i++) {
+   for (int i = 0; i < panels - 1; i++) {
-      Panel* panel = (Panel*) Vector_get(this->items, i);
+      Panel* panel = (Panel*) Vector_get(this->panels, i);
       Panel_resize(panel, panel->w, LINES-y1+y2);
       Panel_move(panel, lastX, y1);
       lastX = panel->x + panel->w + 1;
    }
-   Panel* panel = (Panel*) Vector_get(this->items, items-1);
+   Panel* panel = (Panel*) Vector_get(this->panels, panels-1);
    Panel_resize(panel, COLS-x1+x2-lastX, LINES-y1+y2);
    Panel_move(panel, lastX, y1);
 }
@@ -125,7 +127,7 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
    bool quit = false;
    int focus = 0;
    
-   Panel* panelFocus = (Panel*) Vector_get(this->items, focus);
+   Panel* panelFocus = (Panel*) Vector_get(this->panels, focus);
    if (this->fuBar)
       FunctionBar_draw(this->fuBar, NULL);
    
@@ -133,19 +135,21 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
 
    int ch = 0;
    while (!quit) {
-      int items = this->itemCount;
+      int panels = this->panelCount;
       if (this->header) {
          time_t now = time(NULL);
          if (now > this->lastScan) {
             ProcessList_scan(this->header->pl);
+            ProcessList_sort(this->header->pl);
             this->lastScan = now;
          }
          Header_draw(this->header);
+         ProcessList_rebuildPanel(this->header->pl, false, false, false, false, false, NULL);
       }
-      for (int i = 0; i < items; i++) {
+      for (int i = 0; i < panels; i++) {
-         Panel* panel = (Panel*) Vector_get(this->items, i);
+         Panel* panel = (Panel*) Vector_get(this->panels, i);
          Panel_draw(panel, i == focus);
-         if (i < items) {
+         if (i < panels) {
             if (this->orientation == HORIZONTAL) {
                mvvline(panel->y, panel->x+panel->w, ' ', panel->h+1);
             }
@@ -166,8 +170,8 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
             if (mevent.y == LINES - 1) {
                ch = FunctionBar_synthesizeEvent(this->fuBar, mevent.x);
             } else {
-               for (int i = 0; i < this->itemCount; i++) {
+               for (int i = 0; i < this->panelCount; i++) {
-                  Panel* panel = (Panel*) Vector_get(this->items, i);
+                  Panel* panel = (Panel*) Vector_get(this->panels, i);
                   if (mevent.x > panel->x && mevent.x <= panel->x+panel->w &&
                      mevent.y > panel->y && mevent.y <= panel->y+panel->h) {
                      focus = i;
@@ -200,21 +204,25 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
       }
       case KEY_LEFT:
       case KEY_CTRLB:
+         if (!this->allowFocusChange)
+            break;
          tryLeft:
          if (focus > 0)
             focus--;
-         panelFocus = (Panel*) Vector_get(this->items, focus);
+         panelFocus = (Panel*) Vector_get(this->panels, focus);
          if (Panel_size(panelFocus) == 0 && focus > 0)
             goto tryLeft;
          break;
       case KEY_RIGHT:
       case KEY_CTRLF:
       case 9:
+         if (!this->allowFocusChange)
+            break;
          tryRight:
-         if (focus < this->itemCount - 1)
+         if (focus < this->panelCount - 1)
             focus++;
-         panelFocus = (Panel*) Vector_get(this->items, focus);
+         panelFocus = (Panel*) Vector_get(this->panels, focus);
-         if (Panel_size(panelFocus) == 0 && focus < this->itemCount - 1)
+         if (Panel_size(panelFocus) == 0 && focus < this->panelCount - 1)
             goto tryRight;
          break;
       case KEY_F(10):

ScreenManager.h

@@ -33,13 +33,14 @@ typedef struct ScreenManager_ {
    int x2;
    int y2;
    Orientation orientation;
-   Vector* items;
+   Vector* panels;
    Vector* fuBars;
-   int itemCount;
+   int panelCount;
    const FunctionBar* fuBar;
    const Header* header;
    time_t lastScan;
    bool owner;
+   bool allowFocusChange;
 } ScreenManager;
 
 

htop.c

@@ -199,6 +199,7 @@ static Object* pickFromVector(Panel* panel, Panel* list, int x, int y, const cha
    if (!list->eventHandler)
       Panel_setEventHandler(list, Panel_selectByTyping);
    ScreenManager* scr = ScreenManager_new(0, y, 0, -1, HORIZONTAL, header, false);
+   scr->allowFocusChange = false;
    ScreenManager_add(scr, list, FunctionBar_new(keyLabels, fuKeys, fuEvents), x - 1);
    ScreenManager_add(scr, panel, NULL, -1);
    Panel* panelFocus;
@@ -331,7 +332,6 @@ int main(int argc, char** argv) {
       exit(1);
    }
 
-   Panel* panel;
    int quit = 0;
    int refreshTimeout = 0;
    int resetRefreshTimeout = 5;
@@ -384,10 +384,11 @@ int main(int argc, char** argv) {
       break;
    }
 
-   
    CRT_init(settings->delay, settings->colorScheme);
 
-   panel = Panel_new(0, headerHeight, COLS, LINES - headerHeight - 2, PROCESS_CLASS, false, NULL);
+   Panel* panel = Panel_new(0, headerHeight, COLS, LINES - headerHeight - 2, PROCESS_CLASS, false, NULL);
+   ProcessList_setPanel(pl, panel);
+   
    if (sortKey > 0) {
       pl->sortKey = sortKey;
       pl->treeView = false;
@@ -439,12 +440,6 @@ int main(int argc, char** argv) {
       if (recalculate)
          oldTime = newTime;
       if (doRefresh) {
-
-         int currPos = Panel_getSelectedIndex(panel);
-         pid_t currPid = 0;
-         int currScrollV = panel->scrollV;
-         if (follow)
-            currPid = ProcessList_get(pl, currPos)->pid;
          if (recalculate || doRecalculate) {
             ProcessList_scan(pl);
             doRecalculate = false;
@@ -453,27 +448,7 @@ int main(int argc, char** argv) {
             ProcessList_sort(pl);
             refreshTimeout = 1;
          }
-         Panel_prune(panel);
+         ProcessList_rebuildPanel(pl, true, follow, userOnly, userId, filtering, incFilter.buffer);
-         int size = ProcessList_size(pl);
-         int idx = 0;
-         for (int i = 0; i < size; i++) {
-            bool hidden = false;
-            Process* p = ProcessList_get(pl, i);
-
-            if ( (!p->show)
-               || (userOnly && (p->st_uid != userId))
-               || (filtering && !(String_contains_i(p->comm, incFilter.buffer))) )
-               hidden = true;
-
-            if (!hidden) {
-               Panel_set(panel, idx, (Object*)p);
-               if ((!follow && idx == currPos) || (follow && p->pid == currPid)) {
-                  Panel_setSelected(panel, idx);
-                  panel->scrollV = currScrollV;
-               }
-               idx++;
-            }
-         }
       }
       doRefresh = true;
       
@@ -746,6 +721,19 @@ int main(int argc, char** argv) {
          if (!killPanel) {
             killPanel = (Panel*) SignalsPanel_new(0, 0, 0, 0);
          }
+         bool anyTagged = false;
+         pid_t selectedPid;
+         for (int i = 0; i < Panel_size(panel); i++) {
+            Process* p = (Process*) Panel_get(panel, i);
+            if (p->tag) {
+               anyTagged = true;
+               break;
+            }
+         }
+         if (!anyTagged) {
+            Process* p = (Process*) Panel_getSelected(panel);
+            selectedPid = p->pid;
+         }
          SignalsPanel_reset((SignalsPanel*) killPanel);
          const char* fuFunctions[] = {"Send  ", "Cancel ", NULL};
          ListItem* sgn = (ListItem*) pickFromVector(panel, killPanel, 15, headerHeight, fuFunctions, defaultBar, header);
@@ -754,17 +742,18 @@ int main(int argc, char** argv) {
                Panel_setHeader(panel, "Sending...");
                Panel_draw(panel, true);
                refresh();
-               bool anyTagged = false;
+               if (anyTagged) {
-               for (int i = 0; i < Panel_size(panel); i++) {
+                  for (int i = 0; i < Panel_size(panel); i++) {
-                  Process* p = (Process*) Panel_get(panel, i);
+                     Process* p = (Process*) Panel_get(panel, i);
-                  if (p->tag) {
+                     if (p->tag) {
-                     Process_sendSignal(p, sgn->key);
+                        Process_sendSignal(p, sgn->key);
-                     anyTagged = true;
+                        anyTagged = true;
+                     }
                   }
-               }
+               } else {
-               if (!anyTagged) {
                   Process* p = (Process*) Panel_getSelected(panel);
-                  Process_sendSignal(p, sgn->key);
+                  if (p->pid == selectedPid)
+                     Process_sendSignal(p, sgn->key);
                }
                napms(500);
             }