/*
* Name: run_url_browser
* Input arguments: 'nTabIndex': URL-RENDERING tab index
* Output arguments: void
* Function: This function will make a URL-RENDRERING tab Note.
* You need to use below functions to handle tab event.
* 1. process_all_gtk_events();
* 2. process_single_gtk_event();
* 3. render_web_page_in_tab(uri, b_window);
* For more details please Appendix B.
*/
int run_url_browser(int nTabIndex)
{
browser_window * b_window = NULL;
int bytesRead = 0;
char uri [512];
// Launch a url rendering browser
create_browser(URL_RENDERING_TAB, nTabIndex, G_CALLBACK(new_tab_created_cb), G_CALLBACK(uri_entered_cb), &b_window, comm[nTabIndex]);
// Check for instructions sent from the router or gtk events
child_req_to_parent req;
while (1)
{
usleep(1000);
if((bytesRead = read(comm[nTabIndex].parent_to_child_fd[0], &req, sizeof(child_req_to_parent))) == -1){
if(errno == EAGAIN) // if nothing to be read yet, process browser events and wait for another round
process_single_gtk_event();
else
perror("run_url_browser@134: Url browser reads from pipe");
}
else{ // perform instructions
switch(req.type){
case NEW_URI_ENTERED: // render the given uri
strcpy(uri,req.req.uri_req.uri);
render_web_page_in_tab(uri, b_window);
break;
case TAB_KILLED: // process gtk events and terminate this process with exit success
process_single_gtk_event();
exit(EXIT_SUCCESS);
default: // invalid request type
fprintf(stderr, "run_url_browser@149: Invalid request for url rendering browser\n");
break;
}
}
}
return 0;
}
int run_url_browser(int nTabIndex, comm_channel comm)
{
browser_window * b_window = NULL;
// Create controler window
create_browser(URL_RENDERING_TAB, nTabIndex, G_CALLBACK(new_tab_created_cb), G_CALLBACK(uri_entered_cb), &b_window, comm);
child_req_to_parent request;
char uri_req[512];
int r;
while (1) // Need to communicate with Router process here. Will receieve requests for processing.
{
process_single_gtk_event();
usleep(1000);
// Insert code here!!
// 1. process_all_gtk_events();
// 2. process_single_gtk_event();
// 3. render_web_page_in_tab(uri, b_window);
// Read the request from the comm_channel
r = read(comm.parent_to_child_fd[0], &request, sizeof(child_req_to_parent));
/*
* Handle each type of message (few mentioned below)
*/
if(r == -1)
{
//do nothing
}
else
{
if(request.type == NEW_URI_ENTERED) // NEW_URI_ENTERED: render_web_page_in_tab(uri, b_window);
{
strcpy(uri_req, request.req.uri_req.uri);
render_web_page_in_tab(uri_req, b_window);
}
// TAB_KILLED: process all gtk events();
if(request.type == TAB_KILLED)
{
process_all_gtk_events();
break;
}
}
}
return 0;
}
