tvnodes.c

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#include <assert.h>
#include "tvnodes.h"
#include "viewport.h"
#include "topviewfuncs.h"
#include <stdbool.h>
#include <string.h>
#include <util/alloc.h>
#include <util/strview.h>
#include <util/tokenize.h>
 
typedef struct {
    GType type;
    char *name;
    bool editable;
} gridCol;
typedef struct {
    int count;
    gridCol *columns;
    GtkTreeStore *store;
    char *flds;
    char *buf;
} grid_t;
 
static char* ID = "ID";
static char* Name = "Name";
static char* Visible = "Visible";
 
/* induceEdges:
 * Add all edges of g which have both ends in sg to sg
 */
static void induceEdges (Agraph_t * g, Agraph_t * sg)
{
    Agnode_t *n;
    Agedge_t *e;
 
    for (n = agfstnode(sg); n; n = agnxtnode(sg, n)) {
        for (e = agfstout(g, n); e; e = agnxtout(g, e)) {
            if (agsubnode(sg, aghead(e), 0)) {
                agsubedge(sg, e, 1);
            }
        }
    }
}
 
/*
        call this function to create a subgraph from filtered nodes and maybe edges
*/
static int create_save_subgraph_from_filter(char *filename, int withEdges)
{
    Agraph_t *subg = agsubg(view->g[view->activeGraph], "temp", 1);
    FILE *outputfile;
    Agnode_t *v;
    Agraph_t *g;
    int ret;
 
    g = view->g[view->activeGraph];
    for (v = agfstnode(g); v; v = agnxtnode(g, v)) {
        if (ND_selected(v))
            agsubnode(subg, v, 1);
    }
    if (withEdges)
        induceEdges (view->g[view->activeGraph], subg);
 
    if ((outputfile = fopen(filename, "w"))) {
        ret = agwrite(subg, outputfile);
        fclose(outputfile);
    } else {
        fprintf (stderr, "Could not open %s for writing\n", filename);
        ret = 1;
    }
    agdelsubg(view->g[view->activeGraph], subg);
    return ret;
}
 
 
static void set_visibility(Agraph_t * g, int visibility)
{
    Agnode_t *v;
    Agsym_t *visible_attr = GN_visible(g);
    Agsym_t *selected_attr = GN_selected(g);
 
    if (!selected_attr)
        return;
    if (!visible_attr)
        visible_attr = GN_visible(g) = agattr_text(g, AGNODE, "visible", "1");
    const char *const bf = visibility ? "1" : "0";
    for (v = agfstnode(g); v; v = agnxtnode(g, v)) {
        if (!ND_selected(v)) continue;
        agxset(v, visible_attr, bf);
    }
}
 
void tv_show_all(void) {
    set_visibility(view->g[view->activeGraph], 1);
    updateSmGraph(view->g[view->activeGraph], view->Topview);
}
 
void tv_hide_all(void) {
    set_visibility(view->g[view->activeGraph], 0);
    updateSmGraph(view->g[view->activeGraph], view->Topview);
}
 
int tv_save_as(int withEdges)
{
    GtkWidget *dialog;
    dialog = gtk_file_chooser_dialog_new("Save File",
                                         NULL,
                                         GTK_FILE_CHOOSER_ACTION_SAVE,
                                         GTK_STOCK_CANCEL,
                                         GTK_RESPONSE_CANCEL,
                                         GTK_STOCK_SAVE,
                                         GTK_RESPONSE_ACCEPT, NULL);
    gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER
                                                   (dialog), TRUE);
    if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
        char *filename;
        filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
 
        create_save_subgraph_from_filter(filename, withEdges);
        g_free(filename);
        gtk_widget_destroy(dialog);
 
        return 1;
    }
    gtk_widget_destroy(dialog);
    return 0;
}
 
static void create_text_column(char *Title, GtkTreeView * tree, int asso,
                               bool editable)
{
    PangoColor c;
    GtkTreeViewColumn *column;
    GtkCellRendererText *renderer;
 
 
    renderer = (GtkCellRendererText *) gtk_cell_renderer_text_new();
    ((GtkCellRenderer *) renderer)->mode = GTK_CELL_RENDERER_MODE_EDITABLE;
    renderer->editable = editable;
    c.blue = 0;
    c.green = 1;
    c.red = 0;
    renderer->foreground = c;
 
    column =
        gtk_tree_view_column_new_with_attributes(Title,
                                                 (GtkCellRenderer *)
                                                 renderer, "text", asso,
                                                 NULL);
 
    gtk_tree_view_append_column(GTK_TREE_VIEW(tree), column);
    gtk_tree_view_column_set_resizable(column, 1);
 
}
 
static void create_toggle_column(char *Title, GtkTreeView * tree, int asso,
                                 bool editable)
{
    GtkTreeViewColumn *column;
    GtkCellRendererToggle *renderer;
    renderer = (GtkCellRendererToggle *) gtk_cell_renderer_toggle_new();
    renderer->activatable = editable;
 
    column =
        gtk_tree_view_column_new_with_attributes(Title,
                                                 (GtkCellRenderer *)
                                                 renderer, "active", asso,
                                                 NULL);
    gtk_tree_view_append_column(GTK_TREE_VIEW(tree), column);
    gtk_tree_view_column_set_resizable(column, 1);
 
}
 
static void populate_data(Agraph_t *g, grid_t *grid) {
    Agnode_t *v;
    int id = 0;
    GtkTreeIter iter;
    GValue value = {0};
    char* bf;
 
    for (v = agfstnode(g); v; v = agnxtnode(g, v)) {
        if (!ND_selected(v))
            continue;
        gtk_tree_store_append(grid->store, &iter, NULL);
 
        for (id = 0; id < grid->count; id++) {
            gridCol *cp = &grid->columns[id];
            if (strcmp(cp->name, ID) == 0) continue;
 
            if (strcmp(cp->name, Name) == 0)
                bf = agnameof(v);
            else
                bf = agget(v, cp->name);
            if (!bf && strcmp(cp->name, Visible) != 0)
                continue;
 
            g_value_init(&value, cp->type);
            switch (grid->columns[id].type) {
            case G_TYPE_BOOLEAN:
                if (bf) {
                    if ((strcmp(bf, "1") == 0) || (strcmp(bf, "true") == 0)
                        || (strcmp(bf, "True") == 0))
                        g_value_set_boolean(&value, 1);
                    else
                        g_value_set_boolean(&value, 0);
                } else {
                    if (strcmp(cp->name, Visible) == 0)
                        g_value_set_boolean(&value, 1);
                }
                break;
            default:
                g_value_set_static_string(&value, bf);
 
            }
            gtk_tree_store_set_value(grid->store, &iter, id, &value);
            g_value_unset(&value);
        }
    }
}
 
static GtkTreeStore *update_tree_store(GtkTreeStore * store, int ncolumns,
                                       GType * types)
{
    if ((ncolumns == 0) || (types == NULL))
        return NULL;
    if (store) {
        gtk_tree_store_clear(store);
        g_object_unref(store);
    }
 
    store = gtk_tree_store_newv(ncolumns, types);
    return store;
}
 
 
static void create_column(gridCol * c, GtkTreeView * tree, int id)
{
    assert(c != NULL);
    switch (c->type) {
    case G_TYPE_STRING:
    case G_TYPE_INT:
        create_text_column(c->name, tree, id, c->editable);
        break;
    case G_TYPE_BOOLEAN:
        create_toggle_column(c->name, tree, id, c->editable);
        break;
    default:
        create_text_column(c->name, tree, id, c->editable);
    }
}
 
static GtkTreeView *update_tree(GtkTreeView *tree, grid_t *g) {
 
    GtkTreeStore *store = NULL;
    GtkTreeViewColumn *column;
    GType *types;
    int id = 0;
 
    if (tree) {
        while ((column = gtk_tree_view_get_column(tree, 0)))    /*clear all columns */
            gtk_tree_view_remove_column(tree, column);
        store = (GtkTreeStore *) gtk_tree_view_get_model(tree);
    } else {
        tree = (GtkTreeView *) gtk_tree_view_new();
        gtk_widget_show((GtkWidget *) tree);
 
        gtk_container_add((GtkContainer *)
                          glade_xml_get_widget(xml, "scrolledwindow9"),
                          (GtkWidget *) tree);
 
    }
    if (g->count > 0) {
        types = gv_calloc((size_t)g->count, sizeof(GType));
        for (id = 0; id < g->count; id++)
            types[id] = g->columns[id].type;
        store = update_tree_store(g->store, g->count, types);
        free (types);
        gtk_tree_view_set_model(tree, (GtkTreeModel *) store);
        /*insert columns */
        for (id = 0; id < g->count; id++)
            create_column(&g->columns[id], tree, id);
    }
    g->store = store;
    return tree;
}
 
static void add_column(grid_t *g, strview_t name, bool editable, GType g_type) {
    if (strview_str_eq(name, ""))
        return;
    assert(g->count >= 0);
    g->columns = gv_recalloc(g->columns, (size_t)g->count, (size_t)g->count + 1,
                             sizeof(gridCol));
    g->columns[g->count].editable = editable;
    g->columns[g->count].name = strview_str(name);
    g->columns[g->count].type = g_type;
    g->count++;
}
 
static void clearGrid(grid_t * g) {
    int id;
    for (id = 0; id < g->count; id++) {
        free(g->columns[id].name);
    }
    free(g->columns);
    free(g->buf);
    g->count = 0;
    g->columns = 0;
    g->flds = 0;
}
 
static grid_t *initGrid(void) {
    grid_t *gr = gv_alloc(sizeof(grid_t));
    gr->columns = NULL;
    gr->count = 0;
    gr->buf = 0;
    return gr;
}
 
static grid_t *update_columns(grid_t *g, char *str) {
    if (g) {
        if (g->flds != str)
            clearGrid(g);
        else
            return g;
    } else
        g = initGrid();
    add_column(g, strview(Name, '\0'), false, G_TYPE_STRING);
    if (!str)
        return g;
 
    g->flds = str;
    for (tok_t t = tok(str, ","); !tok_end(&t); tok_next(&t)) {
        strview_t a = tok_get(&t);
        add_column(g, a, true, G_TYPE_STRING);
    }
    return g;
}
 
void setup_tree(Agraph_t * g)
{
    /*
       G_TYPE_STRING:
       G_TYPE_INT:
       G_TYPE_BOOLEAN:
     */
    static GtkTreeView *tree;
    static grid_t *gr;
    char *buf = agget(g, "datacolumns");
 
    gr = update_columns(gr, buf);
    tree = update_tree(tree, gr);
    populate_data(g, gr);
}