Introduce Row and Table classes for screens beyond top-processes

This commit refactors the Process and ProcessList structures such
they each have a new parent - Row and Table, respectively.  These
new classes handle screen updates relating to anything that could
be represented in tabular format, e.g. cgroups, filesystems, etc,
without us having to reimplement the display logic repeatedly for
each new entity.

2 files changed, 28 insertions, 19 deletions

diff --git a/unsupported/UnsupportedProcess.c b/unsupported/UnsupportedProcess.c
index 4d8cb080..6df2e36a 100644
--- a/unsupported/UnsupportedProcess.c
+++ b/unsupported/UnsupportedProcess.c
@@ -58,21 +58,20 @@ void Process_delete(Object* cast) {
    free(cast);
 }
 
-static void UnsupportedProcess_writeField(const Process* this, RichString* str, ProcessField field) {
-   const UnsupportedProcess* up = (const UnsupportedProcess*) this;
-   bool coloring = this->host->settings->highlightMegabytes;
+static void UnsupportedProcess_rowWriteField(const Row* super, RichString* str, ProcessField field) {
+   const UnsupportedProcess* up = (const UnsupportedProcess*) super;
+   bool coloring = super->host->settings->highlightMegabytes;
    char buffer[256]; buffer[255] = '\0';
    int attr = CRT_colors[DEFAULT_COLOR];
    size_t n = sizeof(buffer) - 1;
 
-   (void) up;
    (void) coloring;
    (void) n;
 
    switch (field) {
    /* Add platform specific fields */
    default:
-      Process_writeField(this, str, field);
+      Process_writeField(&up->super, str, field);
       return;
    }
    RichString_appendWide(str, attr, buffer);
@@ -94,11 +93,18 @@ static int UnsupportedProcess_compareByKey(const Process* v1, const Process* v2,
 
 const ProcessClass UnsupportedProcess_class = {
    .super = {
-      .extends = Class(Process),
-      .display = Process_display,
-      .delete = Process_delete,
-      .compare = Process_compare
+      .super = {
+         .extends = Class(Process),
+         .display = Row_display,
+         .delete = Process_delete,
+         .compare = Process_compare
+      },
+      .isHighlighted = Process_rowIsHighlighted,
+      .isVisible = Process_rowIsVisible,
+      .matchesFilter = Process_rowMatchesFilter,
+      .compareByParent = Process_compareByParent,
+      .sortKeyString = Process_rowGetSortKey,
+      .writeField = UnsupportedProcess_rowWriteField
    },
-   .writeField = UnsupportedProcess_writeField,
    .compareByKey = UnsupportedProcess_compareByKey
 };
diff --git a/unsupported/UnsupportedProcessList.c b/unsupported/UnsupportedProcessList.c
index e56f4978..1e29c17a 100644
--- a/unsupported/UnsupportedProcessList.c
+++ b/unsupported/UnsupportedProcessList.c
@@ -15,15 +15,18 @@ in the source distribution for its full text.
 
 
 ProcessList* ProcessList_new(Machine* host, Hashtable* pidMatchList) {
-   ProcessList* this = xCalloc(1, sizeof(ProcessList));
+   UnsupportedProcessList* this = xCalloc(1, sizeof(UnsupportedProcessList));
+   Object_setClass(this, Class(ProcessList));
 
-   ProcessList_init(this, Class(Process), host, pidMatchList);
+   ProcessList* super = &this->super;
+   ProcessList_init(super, Class(Process), host, pidMatchList);
 
    return this;
 }
 
-void ProcessList_delete(ProcessList* this) {
-   ProcessList_done(this);
+void ProcessList_delete(Object* cast) {
+   UnsupportedProcessList* this = (UnsupportedProcessList*) cast;
+   ProcessList_done(&this->super);
    free(this);
 }
 
@@ -35,9 +38,9 @@ void ProcessList_goThroughEntries(ProcessList* super) {
 
    /* Empty values */
    proc->time = proc->time + 10;
-   proc->pid  = 1;
-   proc->ppid = 1;
-   proc->tgid = 0;
+   Process_setPid(proc, 1);
+   Process_setParent(proc, 1);
+   Process_setThreadGroup(proc, 0);
 
    Process_updateComm(proc, "commof16char");
    Process_updateCmdline(proc, "<unsupported architecture>", 0, 0);
@@ -48,12 +51,12 @@ void ProcessList_goThroughEntries(ProcessList* super) {
       free_and_xStrdup(&proc->procCwd, "/current/working/directory");
    }
 
-   proc->updated = true;
+   proc->super.updated = true;
 
    proc->state = RUNNING;
    proc->isKernelThread = false;
    proc->isUserlandThread = false;
-   proc->show = true; /* Reflected in settings-> "hideXXX" really */
+   proc->super.show = true; /* Reflected in settings-> "hideXXX" really */
    proc->pgrp = 0;
    proc->session = 0;
    proc->tty_nr = 0;