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/**
* vimp - 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 "hint.js.h"
#define HINT_VAR "VpHint"
static void hints_run_script(char* js);
static void hints_fire(void);
static void hints_observe_input(gboolean observe);
static gboolean hints_changed_callback(GtkEditable *entry, gpointer data);
static gboolean hints_keypress_callback(WebKitWebView* webview, GdkEventKey* event);
void hints_init(void)
{
char* value = NULL;
char* error = NULL;
vp_eval_script(webkit_web_view_get_main_frame(vp.gui.webview), HINTS_JS, &value, &error);
g_free(value);
g_free(error);
}
void hints_clear(void)
{
hints_observe_input(FALSE);
if (GET_CLEAN_MODE() == VP_MODE_HINTING) {
char* js = g_strdup_printf("%s.clear();", HINT_VAR);
char* value = NULL;
char* error = NULL;
vp_eval_script(webkit_web_view_get_main_frame(vp.gui.webview), js, &value, &error);
g_free(value);
g_free(error);
g_free(js);
}
}
void hints_create(const char* input, guint mode, const guint prefixLength)
{
char* js = NULL;
char type;
if (GET_CLEAN_MODE() != VP_MODE_HINTING) {
Style* style = &core.style;
vp.hints.prefixLength = prefixLength;
vp.hints.mode = mode;
vp.hints.num = 0;
js = g_strdup_printf(
"var %s = new VimpHints('%s', '%s', '%s', '%s');",
HINT_VAR,
style->hint_bg,
style->hint_bg_focus,
style->hint_fg,
style->hint_style
);
hints_run_script(js);
g_free(js);
hints_observe_input(TRUE);
}
/* convert the mode into the type chare used in the hint script */
if (mode & HINTS_PROCESS) {
type = 'd';
} else if (mode & HINTS_TYPE_IMAGE) {
type = (HINTS_TARGET_BLANK & mode) ? 'I' : 'i';
} else {
type = (HINTS_TARGET_BLANK & mode) ? 'F' : 'f';
}
js = g_strdup_printf("%s.create('%s', '%c');", HINT_VAR, input ? input : "", type);
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;
char* error = NULL;
int mode = vp.hints.mode;
vp_eval_script(webkit_web_view_get_main_frame(vp.gui.webview), js, &value, &error);
if (error) {
fprintf(stderr, "%s\n", error);
g_free(error);
vp_set_mode(VP_MODE_NORMAL, FALSE);
return;
}
if (!value) {
return;
}
if (!strncmp(value, "DONE:", 5)) {
hints_observe_input(FALSE);
vp_set_mode(VP_MODE_NORMAL, TRUE);
} else if (!strncmp(value, "INSERT:", 7)) {
hints_observe_input(FALSE);
vp_set_mode(VP_MODE_INSERT, TRUE);
} else if (!strncmp(value, "DATA:", 5)) {
hints_observe_input(FALSE);
HintsProcess type = HINTS_GET_PROCESSING(mode);
Arg a = {0};
switch (type) {
case HINTS_PROCESS_INPUT:
a.s = g_strconcat((mode & HINTS_TARGET_BLANK) ? ":tabopen " : ":open ", (value + 5), NULL);
command_input(&a);
g_free(a.s);
break;
case HINTS_PROCESS_YANK:
a.i = COMMAND_YANK_PRIMARY | COMMAND_YANK_SECONDARY;
a.s = g_strdup((value + 5));
command_yank(&a);
g_free(a.s);
break;
}
}
g_free(value);
}
static void hints_fire(void)
{
hints_observe_input(FALSE);
char* js = g_strdup_printf("%s.fire();", HINT_VAR);
hints_run_script(js);
g_free(js);
}
static void hints_observe_input(gboolean observe)
{
static gulong changeHandler = 0;
static gulong keypressHandler = 0;
if (observe) {
changeHandler = g_signal_connect(
G_OBJECT(vp.gui.inputbox), "changed", G_CALLBACK(hints_changed_callback), NULL
);
keypressHandler = g_signal_connect(
G_OBJECT(vp.gui.inputbox), "key-press-event", G_CALLBACK(hints_keypress_callback), NULL
);
} else if (changeHandler && keypressHandler) {
g_signal_handler_disconnect(G_OBJECT(vp.gui.inputbox), changeHandler);
g_signal_handler_disconnect(G_OBJECT(vp.gui.inputbox), keypressHandler);
changeHandler = 0;
keypressHandler = 0;
}
}
static gboolean hints_changed_callback(GtkEditable *entry, gpointer data)
{
const char* text = GET_TEXT();
/* skip hinting prefixes like '.', ',', ';y' ... */
hints_create(text + vp.hints.prefixLength, vp.hints.mode, vp.hints.prefixLength);
return TRUE;
}
static gboolean hints_keypress_callback(WebKitWebView* webview, GdkEventKey* event)
{
Hints* hints = &vp.hints;
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)) {
hints->num /= 10;
hints_update(hints->num);
return TRUE;
}
numval = g_unichar_digit_value((gunichar)gdk_keyval_to_unicode(keyval));
if ((numval >= 1 && numval <= 9) || (numval == 0 && hints->num)) {
/* allow a zero as non-first number */
hints->num = (hints->num ? hints->num * 10 : 0) + numval;
hints_update(hints->num);
return TRUE;
}
return FALSE;
}
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