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netsurf/riscos/url_complete.c
John Tytgat 3f0c50e5a0 - C strings have always an implicit NUL character at the end, no need to specify an extra one. 
- riscos/configure/con_theme.c: removed spurious code line.

svn path=/trunk/netsurf/; revision=6331
2009-02-01 13:37:32 +00:00

750 lines
21 KiB
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/*
* Copyright 2005 Richard Wilson <info@tinct.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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. 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, see <http://www.gnu.org/licenses/>.
*/
/** \file
* GUI URL auto-completion (implementation).
*/
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "oslib/wimp.h"
#include "content/urldb.h"
#include "utils/log.h"
#include "riscos/global_history.h"
#include "riscos/gui.h"
#include "riscos/options.h"
#include "riscos/theme.h"
#include "riscos/url_complete.h"
#include "riscos/wimp.h"
#include "riscos/wimp_event.h"
#include "utils/utils.h"
#define MAXIMUM_VISIBLE_LINES 7
static const char **url_complete_matches = NULL;
static int url_complete_matches_allocated = 0;
static int url_complete_matches_available = 0;
static char *url_complete_matched_string = NULL;
static int url_complete_matches_selection = -1;
static int url_complete_keypress_selection = -1;
static wimp_w url_complete_parent = 0;
static bool url_complete_matches_reset = false;
static char *url_complete_original_url = NULL;
static bool url_complete_memory_exhausted = false;
static const char *url_complete_redraw[MAXIMUM_VISIBLE_LINES];
static char url_complete_icon_null[] = "";
static char url_complete_icon_sprite[12];
static wimp_icon url_complete_icon;
static wimp_icon url_complete_sprite;
static int mouse_x;
static int mouse_y;
static bool url_complete_callback(const char *url,
const struct url_data *data);
/**
* Should be called when the caret is placed into a URL completion icon.
*
* \param g the gui_window to initialise URL completion for
*/
void ro_gui_url_complete_start(struct gui_window *g)
{
const char *url;
if ((!g->toolbar) || (!g->toolbar->display_url) ||
(g->window == url_complete_parent))
return;
ro_gui_url_complete_close(NULL, 0);
url = ro_gui_get_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL);
url_complete_matched_string = strdup(url);
if (url_complete_matched_string)
url_complete_parent = g->window;
}
/**
* Handles a keypress for URL completion
*
* \param g the gui_window to update
* \param key the key pressed (as UTF32 code or wimp key + bit31 set)
* \return true to indicate keypress handled, false otherwise
*/
bool ro_gui_url_complete_keypress(struct gui_window *g, uint32_t key)
{
wimp_window_state state;
char *match_url;
const char *url;
int i, lines;
int old_selection;
int height;
os_error *error;
bool currently_open;
/* we must have a toolbar/url bar */
if ((!g->toolbar) || (!g->toolbar->display_url) ||
(!option_url_suggestion)) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
/* if we are currently active elsewhere, remove the previous window */
currently_open = ((g->window == url_complete_parent) &&
(url_complete_matches_available > 0));
if (g->window != url_complete_parent)
ro_gui_url_complete_close(NULL, 0);
/* forcibly open on down keys */
if ((!currently_open) && (url_complete_matched_string)) {
switch (key) {
case IS_WIMP_KEY | wimp_KEY_DOWN:
case IS_WIMP_KEY | wimp_KEY_PAGE_DOWN:
case IS_WIMP_KEY | wimp_KEY_CONTROL | wimp_KEY_DOWN:
free(url_complete_matched_string);
url_complete_matched_string = NULL;
}
}
/* get the text to match */
url_complete_parent = g->window;
url = ro_gui_get_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL);
match_url = strdup(url);
if (!match_url) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
/* if the text to match has changed then update it */
if ((!url_complete_matched_string) ||
(strcmp(match_url, url_complete_matched_string))) {
/* memorize the current matches */
lines = MAXIMUM_VISIBLE_LINES;
if (lines > url_complete_matches_available)
lines = url_complete_matches_available;
if (url_complete_matches)
for (i = 0; i < MAXIMUM_VISIBLE_LINES; i++)
url_complete_redraw[i] =
url_complete_matches[i];
/* our selection gets wiped */
error = xwimp_force_redraw(dialog_url_complete,
0,
-(url_complete_matches_selection + 1) * 44,
65536, -url_complete_matches_selection * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
/* clear our state */
free(url_complete_original_url);
free(url_complete_matched_string);
url_complete_matched_string = match_url;
url_complete_original_url = NULL;
url_complete_matches_available = 0;
url_complete_matches_selection = -1;
url_complete_keypress_selection = -1;
/* get some initial memory */
if (!url_complete_matches) {
url_complete_matches = malloc(64 * sizeof(char *));
if (!url_complete_matches) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
url_complete_matches_allocated = 64;
}
/* find matches */
url_complete_memory_exhausted = false;
if (strlen(match_url) == 0)
urldb_iterate_entries(url_complete_callback);
else
urldb_iterate_partial(match_url, url_complete_callback);
if ((url_complete_memory_exhausted) ||
(url_complete_matches_available == 0)) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
/* update the window */
state.w = g->window;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return false;
}
url_complete_matches_reset = true;
ro_gui_url_complete_resize(g, (wimp_open *)&state);
url_complete_matches_reset = false;
/* redraw the relevant bits of the window */
lines = MAXIMUM_VISIBLE_LINES;
if (lines > url_complete_matches_available)
lines = url_complete_matches_available;
for (i = 0; i < lines; i++) {
if (url_complete_redraw[i] !=
url_complete_matches[i]) {
error = xwimp_force_redraw(dialog_url_complete,
0, -(i + 1) * 44, 65536, -i * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum,
error->errmess));
warn_user("WimpError",
error->errmess);
}
}
}
} else {
free(match_url);
}
/* handle keypresses */
if (!currently_open)
return false;
old_selection = url_complete_matches_selection;
switch (key) {
case IS_WIMP_KEY | wimp_KEY_UP:
url_complete_matches_selection--;
break;
case IS_WIMP_KEY | wimp_KEY_DOWN:
url_complete_matches_selection++;
break;
case IS_WIMP_KEY | wimp_KEY_PAGE_UP:
url_complete_matches_selection -=
MAXIMUM_VISIBLE_LINES;
break;
case IS_WIMP_KEY | wimp_KEY_PAGE_DOWN:
url_complete_matches_selection +=
MAXIMUM_VISIBLE_LINES;
break;
case IS_WIMP_KEY | wimp_KEY_CONTROL | wimp_KEY_UP:
url_complete_matches_selection = 0;
break;
case IS_WIMP_KEY | wimp_KEY_CONTROL | wimp_KEY_DOWN:
url_complete_matches_selection = 65536;
break;
}
if (url_complete_matches_selection >
url_complete_matches_available - 1)
url_complete_matches_selection =
url_complete_matches_available - 1;
else if (url_complete_matches_selection < -1)
url_complete_matches_selection = -1;
if (old_selection == url_complete_matches_selection)
return false;
error = xwimp_force_redraw(dialog_url_complete,
0, -(old_selection + 1) * 44,
65536, -old_selection * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
error = xwimp_force_redraw(dialog_url_complete,
0, -(url_complete_matches_selection + 1) * 44,
65536, -url_complete_matches_selection * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
if (old_selection == -1) {
free(url_complete_original_url);
url_complete_original_url = malloc(strlen(url) + 1);
if (!url_complete_original_url)
return false;
strcpy(url_complete_original_url, url);
}
if (url_complete_matches_selection == -1) {
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_original_url, true);
} else {
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_matches[
url_complete_matches_selection], true);
free(url_complete_matched_string);
url_complete_matched_string = strdup(url_complete_matches[
url_complete_matches_selection]);
}
url_complete_keypress_selection = url_complete_matches_selection;
/* auto-scroll */
state.w = dialog_url_complete;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return true;
}
if (state.yscroll < -(url_complete_matches_selection * 44))
state.yscroll = -(url_complete_matches_selection * 44);
height = state.visible.y1 - state.visible.y0;
if (state.yscroll - height >
-((url_complete_matches_selection + 1) * 44))
state.yscroll =
-((url_complete_matches_selection + 1) * 44) + height;
error = xwimp_open_window((wimp_open *)(&state));
if (error) {
LOG(("xwimp_open_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return true;
}
return true;
}
/**
* Callback function for urldb_iterate_partial
*
* \param url URL which matches
* \param data Data associated with URL
* \return true to continue iteration, false otherwise
*/
bool url_complete_callback(const char *url, const struct url_data *data)
{
const char **array_extend;
/* Ignore unvisited URLs */
if (data->visits == 0)
return true;
url_complete_matches_available++;
if (url_complete_matches_available >
url_complete_matches_allocated) {
array_extend = (const char **)realloc(url_complete_matches,
(url_complete_matches_allocated + 64) *
sizeof(char *));
if (!array_extend) {
url_complete_memory_exhausted = true;
return false;
}
url_complete_matches = array_extend;
url_complete_matches_allocated += 64;
}
url_complete_matches[url_complete_matches_available - 1] = url;
return true;
}
/**
* Move and resize the url completion window to match the toolbar.
*
* \param g the gui_window to update
* \param open the wimp_open request (updated on exit)
*/
void ro_gui_url_complete_resize(struct gui_window *g, wimp_open *open)
{
os_box extent = { 0, 0, 0, 0 };
wimp_icon_state url_state;
wimp_window_state toolbar_state;
wimp_window_state state;
os_error *error;
int lines;
int scroll_v = 0;
/* only react to our window */
if (open->w != url_complete_parent)
return;
/* if there is no toolbar, or there is no URL bar shown,
* or there are no URL matches, close it */
if ((!g->toolbar) || (!g->toolbar->display_url) ||
(!url_complete_matches) ||
(url_complete_matches_available == 0)) {
ro_gui_url_complete_close(NULL, 0);
return;
}
/* get our current auto-complete window state for the scroll values */
state.w = dialog_url_complete;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
if (url_complete_matches_reset)
state.yscroll = 0;
/* move the window to the correct position */
toolbar_state.w = g->toolbar->toolbar_handle;
error = xwimp_get_window_state(&toolbar_state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
url_state.w = g->toolbar->toolbar_handle;
url_state.i = ICON_TOOLBAR_SURROUND;
error = xwimp_get_icon_state(&url_state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
lines = url_complete_matches_available;
extent.y0 = -(lines * 44);
extent.x1 = 65536;
error = xwimp_set_extent(dialog_url_complete, &extent);
if (error) {
LOG(("xwimp_set_extent: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
state.next = open->next;
state.flags &= ~wimp_WINDOW_VSCROLL;
state.flags &= ~(4095 << 16); /* clear bits 16-27 */
if (lines > MAXIMUM_VISIBLE_LINES) {
lines = MAXIMUM_VISIBLE_LINES;
scroll_v = ro_get_vscroll_width(NULL) - 2;
state.flags |= wimp_WINDOW_VSCROLL;
}
state.visible.x0 = open->visible.x0 + 2 + url_state.icon.extent.x0;
state.visible.x1 = open->visible.x0 - 2 +
url_state.icon.extent.x1 - scroll_v;
state.visible.y1 = open->visible.y1 - url_state.icon.extent.y1 + 2;
state.visible.y0 = state.visible.y1 - (lines * 44);
if (state.visible.x1 + scroll_v > toolbar_state.visible.x1)
state.visible.x1 = toolbar_state.visible.x1 - scroll_v;
if (state.visible.x1 - state.visible.x0 < 0) {
error = xwimp_close_window(dialog_url_complete);
if (error) {
LOG(("xwimp_close_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
} else {
error = xwimp_open_window_nested_with_flags(&state,
(wimp_w)-1, 0);
if (error) {
LOG(("xwimp_open_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
open->next = dialog_url_complete;
}
}
/**
* Try to close the current url completion window
*
* \param g the gui_window the user clicked on (or NULL to forcibly close)
* \param i the icon the user clicked on to prompt the close
* \return whether the window was closed
*/
bool ro_gui_url_complete_close(struct gui_window *g, wimp_i i)
{
os_error *error;
bool currently_open;
if ((g && (i == ICON_TOOLBAR_URL) &&
(g->window == url_complete_parent)))
return false;
currently_open = ((url_complete_parent) &&
(url_complete_matches_available > 0));
free(url_complete_matches);
free(url_complete_matched_string);
free(url_complete_original_url);
url_complete_matches = NULL;
url_complete_matched_string = NULL;
url_complete_original_url = NULL;
url_complete_matches_allocated = 0;
url_complete_matches_available = 0;
url_complete_keypress_selection = -1;
url_complete_matches_selection = -1;
url_complete_parent = 0;
error = xwimp_close_window(dialog_url_complete);
if (error) {
LOG(("xwimp_close_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
return currently_open;
}
/**
* Redraws a section of the URL completion window
*
* \param redraw the area to redraw
*/
void ro_gui_url_complete_redraw(wimp_draw *redraw)
{
osbool more;
os_error *error;
int clip_y0, clip_y1, origin_y;
int first_line, last_line, line;
const struct url_data *data;
int type;
/* initialise our icon */
url_complete_icon.flags = wimp_ICON_INDIRECTED | wimp_ICON_VCENTRED |
wimp_ICON_TEXT | wimp_ICON_FILLED |
(wimp_COLOUR_BLACK << wimp_ICON_FG_COLOUR_SHIFT) |
(wimp_COLOUR_WHITE << wimp_ICON_BG_COLOUR_SHIFT);
url_complete_icon.extent.x0 = 50;
url_complete_icon.extent.x1 = 16384;
url_complete_icon.data.indirected_text.validation =
url_complete_icon_null;
url_complete_sprite.flags = wimp_ICON_TEXT | wimp_ICON_SPRITE |
wimp_ICON_INDIRECTED | wimp_ICON_FILLED |
wimp_ICON_HCENTRED | wimp_ICON_VCENTRED;
url_complete_sprite.extent.x0 = 0;
url_complete_sprite.extent.x1 = 50;
url_complete_sprite.data.indirected_text.text =
url_complete_icon_null;
url_complete_sprite.data.indirected_text.validation =
url_complete_icon_sprite;
url_complete_sprite.data.indirected_text.size = 1;
/* no matches? no redraw */
if (!url_complete_matches) {
LOG(("Attempt to redraw with no matches made"));
ro_gui_user_redraw(redraw, false, NULL);
return;
}
/* redraw */
more = wimp_redraw_window(redraw);
while (more) {
origin_y = redraw->box.y1 - redraw->yscroll;
clip_y0 = redraw->clip.y0 - origin_y;
clip_y1 = redraw->clip.y1 - origin_y;
first_line = (-clip_y1) / 44;
last_line = (-clip_y0 + 43) / 44;
for (line = first_line; line < last_line; line++) {
if (line == url_complete_matches_selection)
url_complete_icon.flags |=
wimp_ICON_SELECTED;
else
url_complete_icon.flags &=
~wimp_ICON_SELECTED;
url_complete_icon.extent.y1 = -line * 44;
url_complete_icon.extent.y0 = -(line + 1) * 44;
url_complete_icon.data.indirected_text.text =
(char *)url_complete_matches[line];
url_complete_icon.data.indirected_text.size =
strlen(url_complete_matches[line]);
error = xwimp_plot_icon(&url_complete_icon);
if (error) {
LOG(("xwimp_plot_icon: 0x%x: %s",
error->errnum,
error->errmess));
warn_user("WimpError", error->errmess);
}
data = urldb_get_url_data(url_complete_matches[line]);
if (data)
type = ro_content_filetype_from_type(
data->type);
else
type = 0;
sprintf(url_complete_icon_sprite, "Ssmall_%.3x",
type);
if (!ro_gui_wimp_sprite_exists(
url_complete_icon_sprite + 1))
sprintf(url_complete_icon_sprite,
"Ssmall_xxx");
url_complete_sprite.extent.y1 = -line * 44;
url_complete_sprite.extent.y0 = -(line + 1) * 44;
error = xwimp_plot_icon(&url_complete_sprite);
if (error) {
LOG(("xwimp_plot_icon: 0x%x: %s",
error->errnum,
error->errmess));
warn_user("WimpError", error->errmess);
}
}
more = wimp_get_rectangle(redraw);
}
}
/**
* Handle mouse movement over the URL completion window.
*
* \param pointer the pointer state
*/
void ro_gui_url_complete_mouse_at(wimp_pointer *pointer)
{
wimp_mouse_state current;
current = pointer->buttons;
pointer->buttons = 0;
ro_gui_url_complete_click(pointer);
pointer->buttons = current;
}
/**
* Handle mouse clicks in the URL completion window.
*
* \param pointer the pointer state
* \return whether the click was handled
*/
bool ro_gui_url_complete_click(wimp_pointer *pointer)
{
wimp_window_state state;
os_error *error;
int selection, old_selection;
struct gui_window *g;
const char *url;
if ((mouse_x == pointer->pos.x) && (mouse_y == pointer->pos.y) &&
(!pointer->buttons))
return false;
mouse_x = pointer->pos.x;
mouse_y = pointer->pos.y;
state.w = dialog_url_complete;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return false;
}
selection = (state.visible.y1 - pointer->pos.y - state.yscroll) / 44;
if (selection != url_complete_matches_selection) {
if (url_complete_matches_selection == -1) {
g = ro_gui_window_lookup(url_complete_parent);
if (!g)
return false;
url = ro_gui_get_icon_string(
g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL);
free(url_complete_original_url);
url_complete_original_url = malloc(strlen(url) + 1);
if (!url_complete_original_url)
return false;
strcpy(url_complete_original_url, url);
}
old_selection = url_complete_matches_selection;
url_complete_matches_selection = selection;
error = xwimp_force_redraw(dialog_url_complete,
0, -(old_selection + 1) * 44,
65536, -old_selection * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
error = xwimp_force_redraw(dialog_url_complete,
0, -(url_complete_matches_selection + 1) * 44,
65536, -url_complete_matches_selection * 44);
if (error) {
LOG(("xwimp_force_redraw: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
}
if (!pointer->buttons)
return true;
/* find owning window */
g = ro_gui_window_lookup(url_complete_parent);
if (!g)
return false;
/* Select sets the text and launches */
if (pointer->buttons == wimp_CLICK_SELECT) {
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_matches[
url_complete_matches_selection], true);
global_history_add_recent(url_complete_matches[
url_complete_matches_selection]);
/** \todo The interaction of components here is hideous */
/* Do NOT make any attempt to use any of the global url
* completion variables after this call to browser_window_go.
* They will be invalidated by (at least):
* + gui_window_set_url
* + destruction of (i)frames within the current page
* Any attempt to use them will probably result in a crash.
*/
browser_window_go(g->bw,
url_complete_matches[
url_complete_matches_selection],
0, true);
ro_gui_url_complete_close(NULL, 0);
/* Adjust just sets the text */
} else if (pointer->buttons == wimp_CLICK_ADJUST) {
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_matches[
url_complete_matches_selection], true);
ro_gui_url_complete_keypress(g, 0);
}
return true;
}
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