refresh_tree.c

HP PCI热插拔代码GUI HP内部珍贵资料！

/*
 *    Compaq Hot Plug Controller Graphical User Interface 
 *    Copyright 2000, 2001 Compaq Computer Corporation
 *    All rights reserved.
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *    Please send all questions or concerns to [e-mail]
 */

#include "commonheader.h"
#include "refresh_tree.h"
#include "tree.h"
#include "build_tree.h"
#include "callbacks.h"

// refresh the pci tree node structure by re-reading the proc structure (via the build helper function)
void refresh_pci_tree_node(pci_tree_node* node)
{
	int type;
	FILE* fd = NULL;  // file descriptor

	while (node) 
	{	
		fd = fopen(node->proc_path, "r");

		if (fd) {  // valid file descriptor
			fscanf(fd, "%*s %d", &type);
			build_pci_tree_node_helper(node->node_info, node->type, node->proc_path, fd);
			fclose(fd);
		}
		node = node->next;
	}

}

// update the pci tree node list and re-direct to the appropriate render node function
void refresh_tree_data(GtkCTree* tree, GtkCTreeNode* node, gpointer data)
{
	pci_tree_node* node_data = (pci_tree_node*) gtk_ctree_node_get_row_data(tree, node);

	refresh_pci_tree_node(node_data);
	node_data = ctree_partner(tree, node, slot_based);
	(*(node_data->render_node))(tree, node, node_data);
}

// refresh the tree from the user perspective
void refresh_tree(GtkCTree* tree)
{
	int index;
	pci_tree_node* p_node = (pci_tree_node*) gtk_ctree_node_get_row_data(tree, g_node);

	gtk_clist_freeze(GTK_CLIST(tree));
	
	for (index=0; index < MAXSLOTS; index++) {
		if (root_nodes[index] != 0)
			gtk_ctree_pre_recursive(tree, root_nodes[index], refresh_tree_data, NULL);
	}

	if (p_node) {
		// enable/disable the appropriate buttons based on state of selected node	
		set_adapter_button_status(g_node, p_node);
		set_driver_button_status(g_node, p_node);
		set_attention_status_button_status(g_node, p_node);
	}
	
	gtk_clist_thaw(GTK_CLIST(tree));
}