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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2014 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 "config.h"
#include "main.h"
#include "mode.h"
#include "normal.h"
#include "ascii.h"
#include <glib.h>
static GHashTable *modes = NULL;
extern VbCore vb;
static void free_mode(Mode *mode);
void mode_init(void)
{
modes = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, (GDestroyNotify)free_mode);
}
void mode_cleanup(void)
{
if (modes) {
g_hash_table_destroy(modes);
vb.mode = NULL;
}
}
/**
* Creates a new mode with given callback functions.
*/
void mode_add(char id, ModeTransitionFunc enter, ModeTransitionFunc leave,
ModeKeyFunc keypress, ModeInputChangedFunc input_changed)
{
Mode *new = g_slice_new(Mode);
new->id = id;
new->enter = enter;
new->leave = leave;
new->keypress = keypress;
new->input_changed = input_changed;
new->flags = 0;
g_hash_table_insert(modes, GINT_TO_POINTER(id), new);
}
/**
* Enter into the new given mode and leave possible active current mode.
*/
void mode_enter(char id)
{
Mode *new = g_hash_table_lookup(modes, GINT_TO_POINTER(id));
g_return_if_fail(new != NULL);
if (vb.mode) {
/* don't do anything if the mode isn't a new one */
if (vb.mode == new) {
return;
}
/* if there is a active mode, leave this first */
if (vb.mode->leave) {
vb.mode->leave();
}
}
/* reset the flags of the new entered mode */
new->flags = 0;
/* set the new mode so that it is available also in enter function */
vb.mode = new;
/* call enter only if the new mode isn't the current mode */
if (new->enter) {
new->enter();
}
#ifndef TESTLIB
vb_update_statusbar();
#endif
}
/**
* Set the prompt chars and switch to new mode.
*
* @id: Mode id.
* @prompt: Prompt string to set as current prompt.
* @print_prompt: Indicates if the new set prompt should be put into inputbox
* after switching the mode.
*/
void mode_enter_prompt(char id, const char *prompt, gboolean print_prompt)
{
/* set the prompt to be accessible in mode_enter */
strncpy(vb.state.prompt, prompt, PROMPT_SIZE - 1);
vb.state.prompt[PROMPT_SIZE - 1] = '\0';
mode_enter(id);
if (print_prompt) {
/* set it after the mode was entered so that the modes input change
* event listener could grep the new prompt */
vb_echo_force(VB_MSG_NORMAL, false, vb.state.prompt);
}
}
VbResult mode_handle_key(int key)
{
VbResult res;
static gboolean ctrl_v = false;
if (ctrl_v) {
vb.state.processed_key = false;
ctrl_v = false;
return RESULT_COMPLETE;
}
if (key == CTRL('V')) {
vb.mode->flags |= FLAG_NOMAP;
ctrl_v = true;
normal_showcmd(key);
return RESULT_MORE;
}
if (vb.mode && vb.mode->keypress) {
#ifdef DEBUG
int flags = vb.mode->flags;
int id = vb.mode->id;
res = vb.mode->keypress(key);
if (vb.mode) {
PRINT_DEBUG(
"%c[%d]: %#.2x '%c' -> %c[%d]",
id - ' ', flags, key, (key >= 0x20 && key <= 0x7e) ? key : ' ',
vb.mode->id - ' ', vb.mode->flags
);
}
#else
res = vb.mode->keypress(key);
#endif
return res;
}
return RESULT_ERROR;
}
gboolean mode_input_focusin(GtkWidget *widget, GdkEventFocus *event, gpointer data)
{
/* enter the command mode if the focus is on inputbox */
mode_enter('c');
return false;
}
/**
* Process input changed event on current active mode.
*/
void mode_input_changed(GtkTextBuffer* buffer, gpointer data)
{
char *text;
GtkTextIter start, end;
/* don't observe changes in completion mode */
if (vb.mode->flags & FLAG_COMPLETION) {
return;
}
/* don't process changes not typed by the user */
if (gtk_widget_is_focus(vb.gui.input) && vb.mode && vb.mode->input_changed) {
gtk_text_buffer_get_bounds(buffer, &start, &end);
text = gtk_text_buffer_get_text(buffer, &start, &end, false);
vb.mode->input_changed(text);
g_free(text);
}
}
static void free_mode(Mode *mode)
{
g_slice_free(Mode, mode);
}
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