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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2013 Daniel Carl
*
* 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 3 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. 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/.
*/
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkkeysyms-compat.h>
#include "hints.h"
#include "dom.h"
#include "command.h"
#include "hints.js.h"
#define HINT_VAR "VpHint"
#define HINT_FILE "hints.js"
extern VbCore vb;
extern const unsigned int MAXIMUM_HINTS;
static void hints_run_script(char* js);
static void hints_fire();
static void hints_observe_input(gboolean observe);
static gboolean hints_changed_callback(GtkEditable *entry);
static gboolean hints_keypress_callback(WebKitWebView* webview, GdkEventKey* event);
void hints_init(WebKitWebFrame* frame)
{
char* value = NULL;
vb_eval_script(frame, HINTS_JS, HINT_FILE, &value);
g_free(value);
}
void hints_clear()
{
hints_observe_input(FALSE);
if (CLEAN_MODE(vb.state.mode) == VB_MODE_HINTING) {
char* js = g_strdup_printf("%s.clear();", HINT_VAR);
char* value = NULL;
vb_eval_script(webkit_web_view_get_main_frame(vb.gui.webview), js, HINT_FILE, &value);
g_free(value);
g_free(js);
g_signal_emit_by_name(vb.gui.webview, "hovering-over-link", NULL, NULL);
}
}
void hints_create(const char* input, guint mode, const guint prefixLength)
{
char* js = NULL;
if (CLEAN_MODE(vb.state.mode) != VB_MODE_HINTING) {
vb_set_mode(VB_MODE_HINTING, FALSE);
Style* style = &vb.style;
vb.hints.prefixLength = prefixLength;
vb.hints.mode = mode;
vb.hints.num = 0;
char type, usage;
/* convert the mode into the type chare used in the hint script */
type = mode & HINTS_TYPE_LINK ? 'l' : 'i';
if (mode & HINTS_PROCESS_OPEN) {
usage = mode & HINTS_OPEN_NEW ? 'T' : 'O';
} else {
usage = 'U';
}
js = g_strdup_printf(
"%s = new VimbHints('%c', '%c', '%s', '%s', '%s', '%s', %d);",
HINT_VAR, type, usage,
style->hint_bg,
style->hint_bg_focus,
style->hint_fg,
style->hint_style,
MAXIMUM_HINTS
);
hints_observe_input(TRUE);
hints_run_script(js);
g_free(js);
}
js = g_strdup_printf("%s.create('%s');", HINT_VAR, input ? input : "");
hints_run_script(js);
g_free(js);
}
void hints_update(const gulong num)
{
char* js = g_strdup_printf("%s.update(%lu);", HINT_VAR, num);
hints_run_script(js);
g_free(js);
}
void hints_focus_next(const gboolean back)
{
char* js = g_strdup_printf(back ? "%s.focusPrev()" : "%s.focusNext();", HINT_VAR);
hints_run_script(js);
g_free(js);
}
static void hints_run_script(char* js)
{
char* value = NULL;
int mode = vb.hints.mode;
gboolean success = vb_eval_script(
webkit_web_view_get_main_frame(vb.gui.webview), js, HINT_FILE, &value
);
if (!success) {
fprintf(stderr, "%s\n", value);
g_free(value);
vb_set_mode(VB_MODE_NORMAL, FALSE);
return;
}
if (!strncmp(value, "OVER:", 5)) {
g_signal_emit_by_name(
vb.gui.webview, "hovering-over-link", NULL, *(value + 5) == '\0' ? NULL : (value + 5)
);
} else if (!strncmp(value, "DONE:", 5)) {
vb_set_mode(VB_MODE_NORMAL, TRUE);
} else if (!strncmp(value, "INSERT:", 7)) {
vb_set_mode(VB_MODE_INSERT, FALSE);
} else if (!strncmp(value, "DATA:", 5)) {
Arg a = {0};
char* v = (value + 5);
if (mode & HINTS_PROCESS_INPUT) {
a.s = g_strconcat((mode & HINTS_OPEN_NEW) ? ":tabopen " : ":open ", v, NULL);
command_input(&a);
g_free(a.s);
} else {
a.i = COMMAND_YANK_PRIMARY | COMMAND_YANK_SECONDARY;
a.s = v;
command_yank(&a);
}
}
g_free(value);
}
static void hints_fire()
{
char* js = g_strdup_printf("%s.fire();", HINT_VAR);
hints_run_script(js);
g_free(js);
}
static void hints_observe_input(gboolean observe)
{
if (observe) {
vb.hints.change_handler = g_signal_connect(
G_OBJECT(vb.gui.inputbox), "changed", G_CALLBACK(hints_changed_callback), NULL
);
vb.hints.keypress_handler = g_signal_connect(
G_OBJECT(vb.gui.inputbox), "key-press-event", G_CALLBACK(hints_keypress_callback), NULL
);
} else if (vb.hints.change_handler && vb.hints.keypress_handler) {
g_signal_handler_disconnect(G_OBJECT(vb.gui.inputbox), vb.hints.change_handler);
g_signal_handler_disconnect(G_OBJECT(vb.gui.inputbox), vb.hints.keypress_handler);
vb.hints.change_handler = vb.hints.keypress_handler = 0;
}
}
static gboolean hints_changed_callback(GtkEditable *entry)
{
const char* text = GET_TEXT();
/* skip hinting prefixes like '.', ',', ';y' ... */
hints_create(text + vb.hints.prefixLength, vb.hints.mode, vb.hints.prefixLength);
return TRUE;
}
static gboolean hints_keypress_callback(WebKitWebView* webview, GdkEventKey* event)
{
int numval;
guint keyval = event->keyval;
guint state = CLEAN_STATE_WITH_SHIFT(event);
if (keyval == GDK_Return) {
hints_fire();
return TRUE;
}
if (keyval == GDK_BackSpace && (state & GDK_SHIFT_MASK) && (state & GDK_CONTROL_MASK)) {
vb.hints.num /= 10;
hints_update(vb.hints.num);
return TRUE;
}
numval = g_unichar_digit_value((gunichar)gdk_keyval_to_unicode(keyval));
if ((numval >= 1 && numval <= 9) || (numval == 0 && vb.hints.num)) {
/* allow a zero as non-first number */
vb.hints.num = (vb.hints.num ? vb.hints.num * 10 : 0) + numval;
hints_update(vb.hints.num);
return TRUE;
}
return FALSE;
}
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