[project @ 2005-04-23 02:56:14 by adrianl]
Query windows svn path=/import/netsurf/; revision=1678
This commit is contained in:
Adrian Lees
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1e673368d1
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/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
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*/
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#include <stdlib.h>
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#include "netsurf/riscos/gui.h"
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#include "netsurf/riscos/query.h"
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#include "netsurf/riscos/wimp.h"
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#include "netsurf/utils/log.h"
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#include "netsurf/utils/messages.h"
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#include "netsurf/utils/utils.h"
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/** Data for a query window */
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struct gui_query_window
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{
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struct gui_query_window *prev; /** Previous query in list */
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struct gui_query_window *next; /** Next query in list */
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query_id id; /** unique ID number for this query */
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wimp_w window; /** RISC OS window handle */
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const query_callback *cb; /** Table of callback functions */
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void *pw; /** Handle passed to callback functions */
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bool default_confirm; /** Default action is to confirm */
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};
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/** Next unallocated query id */
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static query_id next_id = (query_id)1;
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/** List of all query windows. */
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static struct gui_query_window *gui_query_window_list = 0;
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/** Template for a query window. */
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static struct wimp_window *query_template;
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static void ro_gui_query_window_destroy(struct gui_query_window *qw);
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static struct gui_query_window *ro_gui_query_window_lookup_id(query_id id);
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void ro_gui_query_init(void)
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{
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query_template = ro_gui_dialog_load_template("query");
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}
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/**
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* Lookup a query window using its RISC OS window handle
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*
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* \param w RISC OS window handle
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* \return pointer to query window or NULL
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*/
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struct gui_query_window *ro_gui_query_window_lookup(wimp_w w)
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{
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struct gui_query_window *qw = gui_query_window_list;
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while (qw && qw->window != w)
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qw = qw->next;
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return qw;
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}
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/**
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* Lookup a query window using its ID number
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*
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* \param id id to search for
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* \return pointer to query window or NULL
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*/
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struct gui_query_window *ro_gui_query_window_lookup_id(query_id id)
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{
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struct gui_query_window *qw = gui_query_window_list;
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while (qw && qw->id != id)
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qw = qw->next;
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return qw;
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}
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/**
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* Display a query to the user, requesting a response.
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*
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* \param query message token of query
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* \param detail parameter used in expanding tokenised message
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* \param cb table of callback functions to be called when user responds
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* \param pw handle to be passed to callback functions
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* \return id number of the query (or QUERY_INVALID if it failed)
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*/
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query_id query_user(const char *query, const char *detail, const query_callback *cb, void *pw)
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{
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struct gui_query_window *qw;
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char query_buffer[300];
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os_error *error;
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qw = malloc(sizeof(struct gui_query_window));
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if (!qw) {
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warn_user("NoMemory", NULL);
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return QUERY_INVALID;
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}
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qw->cb = cb;
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qw->pw = pw;
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qw->id = next_id++;
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qw->default_confirm = false;
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if (next_id == QUERY_INVALID)
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next_id++;
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error = xwimp_create_window(query_template, &qw->window);
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if (error) {
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warn_user("WimpError", error->errmess);
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}
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snprintf(query_buffer, sizeof query_buffer, "%s %s",
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messages_get(query), detail ? detail : "");
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query_buffer[sizeof query_buffer - 1] = 0;
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ro_gui_set_icon_string(qw->window, ICON_QUERY_MESSAGE, query_buffer);
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ro_gui_open_window_centre(NULL, qw->window);
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error = xwimp_set_caret_position(qw->window, (wimp_i)-1, 0, 0, 1 << 25, -1);
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if (error) {
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LOG(("xwimp_get_caret_position: 0x%x : %s",
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error->errnum, error->errmess));
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warn_user("WimpError", error->errmess);
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}
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/* put this query window at the head of our list */
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if (gui_query_window_list)
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gui_query_window_list->prev = qw;
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qw->prev = NULL;
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qw->next = gui_query_window_list;
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gui_query_window_list = qw;
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return qw->id;
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}
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/**
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* Close and destroy a query window, releasing all resources
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*
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* \param qw query window
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*/
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void ro_gui_query_window_destroy(struct gui_query_window *qw)
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{
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os_error *error = xwimp_delete_window(qw->window);
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if (error) {
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LOG(("xwimp_delete_window: 0x%x:%s",
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error->errnum, error->errmess));
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warn_user("WimpError", error->errmess);
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}
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/* remove from linked-list of query windows and release memory */
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if (qw->prev)
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qw->prev->next = qw->next;
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else
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gui_query_window_list = qw->next;
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if (qw->next)
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qw->next->prev = qw->prev;
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free(qw);
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}
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/**
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* Close a query window without waiting for a response from the user.
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* (should normally only be called if the user has responded in some other
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* way of which the query window in unaware.)
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*
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* \param id id of query window to close
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*/
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void query_close(query_id id)
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{
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struct gui_query_window *qw = ro_gui_query_window_lookup_id(id);
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if (qw) ro_gui_query_window_destroy(qw);
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}
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void ro_gui_query_window_bring_to_front(query_id id)
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{
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struct gui_query_window *qw = ro_gui_query_window_lookup_id(id);
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if (qw) {
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os_error *error;
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ro_gui_open_window_centre(NULL, qw->window);
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error = xwimp_set_caret_position(qw->window, (wimp_i)-1, 0, 0, 1 << 25, -1);
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if (error) {
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LOG(("xwimp_get_caret_position: 0x%x : %s",
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error->errnum, error->errmess));
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warn_user("WimpError", error->errmess);
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}
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}
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}
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/**
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* Handle mouse clicks in a query window.
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*
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* \param qw query window
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* \param key key press info from the Wimp
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*/
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void ro_gui_query_window_click(struct gui_query_window *qw, wimp_pointer *pointer)
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{
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const query_callback *cb = qw->cb;
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switch (pointer->i) {
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case ICON_QUERY_YES:
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cb->confirm(qw->id, QUERY_YES, qw->pw);
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ro_gui_query_window_destroy(qw);
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break;
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case ICON_QUERY_NO:
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cb->cancel(qw->id, QUERY_NO, qw->pw);
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ro_gui_query_window_destroy(qw);
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break;
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case ICON_QUERY_HELP:
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/* \todo */
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break;
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}
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}
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/**
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* Handle keypresses in a query window.
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*
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* \param qw query window
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* \param pointer mouse pointer state from Wimp.
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* \return true iff the key press is the key press has been handled
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*/
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bool ro_gui_query_window_keypress(struct gui_query_window *qw, wimp_key *key)
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{
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const query_callback *cb = qw->cb;
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switch (key->c) {
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case wimp_KEY_ESCAPE:
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cb->escape(qw->id, QUERY_ESCAPE, qw->pw);
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ro_gui_query_window_destroy(qw);
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return true;
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case wimp_KEY_RETURN:
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if (qw->default_confirm)
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cb->confirm(qw->id, QUERY_YES, qw->pw);
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else
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cb->cancel(qw->id, QUERY_NO, qw->pw);
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ro_gui_query_window_destroy(qw);
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return true;
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}
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return true;
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}
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@ -0,0 +1,22 @@
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/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
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*/
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#ifndef _NETSURF_RISCOS_QUERY_H
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#define _NETSURF_RISCOS_QUERY_H
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#include <stdbool.h>
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#include "oslib/wimp.h"
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#include "netsurf/utils/utils.h"
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struct gui_query_window;
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void ro_gui_query_init(void);
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struct gui_query_window *ro_gui_query_window_lookup(wimp_w w);
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void ro_gui_query_window_bring_to_front(query_id id);
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void ro_gui_query_window_click(struct gui_query_window *qw, wimp_pointer *pointer);
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bool ro_gui_query_window_keypress(struct gui_query_window *qw, wimp_key *key);
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#endif
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