expand/collapse tree

Process.c

@@ -79,6 +79,7 @@ typedef struct Process_ {
    int indent;
    char state;
    bool tag;
+   bool showChildren;
    pid_t ppid;
    unsigned int pgrp;
    unsigned int session;
@@ -331,9 +332,9 @@ static void Process_writeField(Process* this, RichString* str, ProcessField fiel
             n -= 4;
          }
          if (this->pl->direction == 1)
-            snprintf(buf, n, " `- ");
+            snprintf(buf, n, " `%s ", this->showChildren ? "-" : "+" );
          else
-            snprintf(buf, n, " ,- ");
+            snprintf(buf, n, " ,%s ", this->showChildren ? "-" : "+" );
          RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
          Process_writeCommand(this, attr, baseattr, str);
          return;
@@ -460,6 +461,7 @@ Process* Process_new(struct ProcessList_ *pl) {
    this->pid = 0;
    this->pl = pl;
    this->tag = false;
+   this->showChildren = true;
    this->updated = false;
    this->utime = 0;
    this->stime = 0;

Process.h

@@ -81,6 +81,7 @@ typedef struct Process_ {
    int indent;
    char state;
    bool tag;
+   bool showChildren;
    pid_t ppid;
    unsigned int pgrp;
    unsigned int session;

ProcessList.c

@@ -331,7 +331,7 @@ int ProcessList_size(ProcessList* this) {
    return (Vector_size(this->processes));
 }
 
-static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int indent, int direction) {
+static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int indent, int direction, bool show) {
    Vector* children = Vector_new(PROCESS_CLASS, false, DEFAULT_SIZE, Process_compare);
 
    for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
@@ -344,17 +344,21 @@ static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int i
    int size = Vector_size(children);
    for (int i = 0; i < size; i++) {
       Process* process = (Process*) (Vector_get(children, i));
-      int s = this->processes2->items;
-      if (direction == 1)
-         Vector_add(this->processes2, process);
-      else
-         Vector_insert(this->processes2, 0, process);
-      assert(this->processes2->items == s+1); (void)s;
-      int nextIndent = indent;
-      if (i < size - 1)
-         nextIndent = indent | (1 << level);
-      ProcessList_buildTree(this, process->pid, level+1, nextIndent, direction);
-      process->indent = indent | (1 << level);
+      if (show) {
+         int s = this->processes2->items;
+         if (direction == 1)
+            Vector_add(this->processes2, process);
+         else
+            Vector_insert(this->processes2, 0, process);
+         assert(this->processes2->items == s+1); (void)s;
+         int nextIndent = indent;
+         if (i < size - 1)
+            nextIndent = indent | (1 << level);
+         ProcessList_buildTree(this, process->pid, level+1, nextIndent, direction, process->showChildren);
+         process->indent = indent | (1 << level);
+      } else {
+         Hashtable_remove(this->processTable, process->pid);
+      }
    }
    Vector_delete(children);
 }
@@ -382,13 +386,13 @@ void ProcessList_sort(ProcessList* this) {
       init->indent = 0;
       Vector_add(this->processes2, init);
       // Recursively empty list
-      ProcessList_buildTree(this, init->pid, 0, 0, direction);
+      ProcessList_buildTree(this, init->pid, 0, 0, direction, true);
       // Add leftovers
       while (Vector_size(this->processes)) {
          Process* p = (Process*) (Vector_take(this->processes, 0));
          p->indent = 0;
          Vector_add(this->processes2, p);
-         ProcessList_buildTree(this, p->pid, 0, 0, direction);
+         ProcessList_buildTree(this, p->pid, 0, 0, direction, p->showChildren);
       }
       assert(Vector_size(this->processes2) == vsize); (void)vsize;
       assert(Vector_size(this->processes) == 0);

Vector.c

@@ -20,8 +20,6 @@ in the source distribution for its full text.
 #define DEFAULT_SIZE -1
 #endif
 
-typedef void(*Vector_procedure)(void*);
-
 typedef struct Vector_ {
    Object **array;
    Object_Compare compare;
@@ -255,16 +253,3 @@ inline int Vector_indexOf(Vector* this, void* search_, Object_Compare compare) {
    }
    return -1;
 }
-
-/*
-
-static void Vector_foreach(Vector* this, Vector_procedure f) {
-   int i;
-   assert(Vector_isConsistent(this));
-
-   for (i = 0; i < this->items; i++)
-      f(this->array[i]);
-   assert(Vector_isConsistent(this));
-}
-
-*/

Vector.h

@@ -22,8 +22,6 @@ in the source distribution for its full text.
 #define DEFAULT_SIZE -1
 #endif
 
-typedef void(*Vector_procedure)(void*);
-
 typedef struct Vector_ {
    Object **array;
    Object_Compare compare;
@@ -73,8 +71,4 @@ void Vector_add(Vector* this, void* data_);
 
 extern int Vector_indexOf(Vector* this, void* search_, Object_Compare compare);
 
-/*
-
-*/
-
 #endif

htop.c

@@ -117,10 +117,10 @@ static void showHelp(ProcessList* pl) {
    mvaddstr(11, 0, "   F3 /: incremental name search            H: hide/show user threads");
    mvaddstr(12, 0, "                                            K: hide/show kernel threads");
    mvaddstr(13, 0, "  Space: tag processes                      F: cursor follows process");
-   mvaddstr(14, 0, "      U: untag all processes");
+   mvaddstr(14, 0, "      U: untag all processes              + -: expand/collapse tree");
    mvaddstr(15, 0, "   F9 k: kill process/tagged processes      P: sort by CPU%");
-   mvaddstr(16, 0, " - ] F7: higher priority (root only)        M: sort by MEM%");
-   mvaddstr(17, 0, " + [ F8: lower priority (+ nice)            T: sort by TIME");
+   mvaddstr(16, 0, "   ] F7: higher priority (root only)        M: sort by MEM%");
+   mvaddstr(17, 0, "   [ F8: lower priority (+ nice)            T: sort by TIME");
 #ifdef HAVE_PLPA
    if (pl->processorCount > 1)
       mvaddstr(18, 0, "      a: set CPU affinity                F4 I: invert sort order");
@@ -639,6 +639,16 @@ int main(int argc, char** argv) {
          }
          break;
       }
+      case '+':
+      case '=':
+      case '-':
+      {
+         Process* p = (Process*) Panel_getSelected(panel);
+         p->showChildren = !p->showChildren;
+         refreshTimeout = 0;
+         doRecalculate = true;
+         break;
+      }
       case KEY_F(9):
       case 'k':
       {
@@ -751,15 +761,12 @@ int main(int argc, char** argv) {
       }
       case KEY_F(8):
       case '[':
-      case '=':
-      case '+':
       {
          doRefresh = changePriority(panel, 1);
          break;
       }
       case KEY_F(7):
       case ']':
-      case '-':
       {
          doRefresh = changePriority(panel, -1);
          break;