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netsurf/riscos/url_complete.c
Richard Wilson 36b513ccce [project @ 2005-04-05 18:52:00 by rjw] 
Fix reading from zero-page.

svn path=/import/netsurf/; revision=1601
2005-04-05 18:52:00 +00:00

609 lines
18 KiB
C
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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2005 Richard Wilson <info@tinct.net>
*/
/** \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 "netsurf/content/url_store.h"
#include "netsurf/utils/log.h"
#include "netsurf/riscos/global_history.h"
#include "netsurf/riscos/gui.h"
#include "netsurf/riscos/options.h"
#include "netsurf/riscos/theme.h"
#include "netsurf/riscos/url_complete.h"
#include "netsurf/riscos/wimp.h"
#include "netsurf/utils/utils.h"
#define MAXIMUM_VISIBLE_LINES 7
static 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 char *url_complete_redraw[MAXIMUM_VISIBLE_LINES];
static char url_complete_icon_null[] = "\0";
static wimp_icon url_complete_icon;
static int mouse_x;
static int mouse_y;
/**
* 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) {
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 = url_store_match_string(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
*/
bool ro_gui_url_complete_keypress(struct gui_window *g, int key) {
wimp_window_state state;
char **array_extend;
struct url_data *reference = NULL;
char *match_url;
char *url;
char *output;
int i, lines;
int old_selection;
bool ignore_changes = false;
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 wimp_KEY_DOWN:
case wimp_KEY_PAGE_DOWN:
case 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 = url_store_match_string(url);
if (!match_url) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
/* check if we should ignore text changes */
if ((url_complete_keypress_selection >= 0) && (url_complete_matches))
ignore_changes = !strcmp(url,
url_complete_matches[url_complete_keypress_selection]);
/* if the text to match has changed then update it */
if (!ignore_changes && ((!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;
}
/* get all our matches */
while ((output = url_store_match(match_url, &reference))) {
url_complete_matches_available++;
if (url_complete_matches_available >
url_complete_matches_allocated) {
array_extend = realloc(url_complete_matches,
(url_complete_matches_allocated + 64) *
sizeof(char *));
if (!array_extend) {
ro_gui_url_complete_close(NULL, 0);
return false;
}
url_complete_matches = array_extend;
url_complete_matches_allocated += 64;
}
url_complete_matches[url_complete_matches_available - 1] =
output;
}
/* 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 < MAXIMUM_VISIBLE_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 wimp_KEY_UP:
url_complete_matches_selection--;
break;
case wimp_KEY_DOWN:
url_complete_matches_selection++;
break;
case wimp_KEY_PAGE_UP:
url_complete_matches_selection -= MAXIMUM_VISIBLE_LINES;
break;
case wimp_KEY_PAGE_DOWN:
url_complete_matches_selection += MAXIMUM_VISIBLE_LINES;
break;
case wimp_KEY_CONTROL | wimp_KEY_UP:
url_complete_matches_selection = 0;
break;
case 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);
} else {
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
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;
}
/**
* 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;
/* if we the URL completion isn't for our window, or there is no toolbar,
* or there is no URL bar shown, or there are no URL matches, close it */
if ((open->w != url_complete_parent) || (!g->toolbar) ||
(!g->toolbar->display_url) ||
(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_URL;
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
* \param tree the tree 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;
/* 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 = 0;
url_complete_icon.extent.x1 = 16384;
url_complete_icon.data.indirected_text.validation = url_complete_icon_null;
/* 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 =
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);
}
}
more = wimp_get_rectangle(redraw);
}
}
/**
* Handle mouse movements/clicks over the URL completion window.
*
* \param pointer the pointer state
* \param buttons whethere to react to mouse buttons
*/
void ro_gui_url_complete_mouse_at(wimp_pointer *pointer, bool buttons) {
wimp_window_state state;
os_error *error;
int selection, old_selection;
struct gui_window *g;
char *url;
if ((mouse_x == pointer->pos.x) && (mouse_y == pointer->pos.y) &&
(pointer->buttons == 0))
return;
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;
}
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;
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;
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);
}
}
/* Select sets the text and launches */
if ((pointer->buttons == wimp_CLICK_SELECT) && (buttons)) {
g = ro_gui_window_lookup(url_complete_parent);
if (!g)
return;
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_matches[url_complete_matches_selection]);
browser_window_go(g->bw,
url_complete_matches[url_complete_matches_selection],
0);
global_history_add_recent(url_complete_matches[url_complete_matches_selection]);
ro_gui_url_complete_close(NULL, 0);
/* Adjust just sets the text */
} else if ((pointer->buttons == wimp_CLICK_ADJUST) && (buttons)) {
g = ro_gui_window_lookup(url_complete_parent);
if (!g)
return;
ro_gui_set_icon_string(g->toolbar->toolbar_handle,
ICON_TOOLBAR_URL,
url_complete_matches[url_complete_matches_selection]);
ro_gui_url_complete_keypress(g, 0);
}
}
/**
* Dumps all matching URLs to stderr.
*/
void url_complete_dump_matches(const char *url) {
char *match_url;
struct url_data *reference = NULL;
char *output;
match_url = url_store_match_string(url);
if (!match_url)
return;
fprintf(stderr, "\nDumping matches for '%s' ('%s'):\n", url, match_url);
while ((output = url_store_match(match_url, &reference))) {
fprintf(stderr, " - ");
fprintf(stderr, output);
fprintf(stderr, "\n");
}
fprintf(stderr, "\nEnd of matches.\n\n");
free(match_url);
}
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