/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2008 Blender Foundation.
 * All rights reserved.
 *
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/editors/space_info/space_info.c
 *  \ingroup spinfo
 */


#include <string.h>
#include <stdio.h>

#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_rand.h"
#include "BLI_utildefines.h"

#include "BLF_translation.h"

#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_screen.h"

#include "ED_space_api.h"
#include "ED_screen.h"

#include "BIF_gl.h"

#include "WM_api.h"
#include "WM_types.h"

#include "UI_resources.h"
#include "UI_interface.h"
#include "UI_view2d.h"

#include "info_intern.h"  /* own include */
#include "BLO_readfile.h"

/* ******************** default callbacks for info space ***************** */

static SpaceLink *info_new(const bContext *UNUSED(C))
{
	ARegion *ar;
	SpaceInfo *sinfo;
	
	sinfo = MEM_callocN(sizeof(SpaceInfo), "initinfo");
	sinfo->spacetype = SPACE_INFO;

	sinfo->rpt_mask = INFO_RPT_OP;

	/* header */
	ar = MEM_callocN(sizeof(ARegion), "header for info");
	
	BLI_addtail(&sinfo->regionbase, ar);
	ar->regiontype = RGN_TYPE_HEADER;
	ar->alignment = RGN_ALIGN_BOTTOM;
	
	/* main area */
	ar = MEM_callocN(sizeof(ARegion), "main area for info");
	
	BLI_addtail(&sinfo->regionbase, ar);
	ar->regiontype = RGN_TYPE_WINDOW;
	
	/* keep in sync with console */
	ar->v2d.scroll |= (V2D_SCROLL_RIGHT);
	ar->v2d.align |= V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_NEG_Y; /* align bottom left */
	ar->v2d.keepofs |= V2D_LOCKOFS_X;
	ar->v2d.keepzoom = (V2D_LOCKZOOM_X | V2D_LOCKZOOM_Y | V2D_LIMITZOOM | V2D_KEEPASPECT);
	ar->v2d.keeptot = V2D_KEEPTOT_BOUNDS;
	ar->v2d.minzoom = ar->v2d.maxzoom = 1.0f;

	/* for now, aspect ratio should be maintained, and zoom is clamped within sane default limits */
	//ar->v2d.keepzoom = (V2D_KEEPASPECT|V2D_LIMITZOOM);
	
	return (SpaceLink *)sinfo;
}

/* not spacelink itself */
static void info_free(SpaceLink *UNUSED(sl))
{	
//	SpaceInfo *sinfo = (SpaceInfo *) sl;
	
}


/* spacetype; init callback */
static void info_init(struct wmWindowManager *UNUSED(wm), ScrArea *UNUSED(sa))
{

}

static SpaceLink *info_duplicate(SpaceLink *sl)
{
	SpaceInfo *sinfon = MEM_dupallocN(sl);
	
	/* clear or remove stuff from old */
	
	return (SpaceLink *)sinfon;
}



/* add handlers, stuff you only do once or on area/region changes */
static void info_main_area_init(wmWindowManager *wm, ARegion *ar)
{
	wmKeyMap *keymap;

	UI_view2d_region_reinit(&ar->v2d, V2D_COMMONVIEW_CUSTOM, ar->winx, ar->winy);

	/* own keymap */
	keymap = WM_keymap_find(wm->defaultconf, "Info", SPACE_INFO, 0);
	WM_event_add_keymap_handler(&ar->handlers, keymap);
}

static void info_textview_update_rect(const bContext *C, ARegion *ar)
{
	SpaceInfo *sinfo = CTX_wm_space_info(C);
	View2D *v2d = &ar->v2d;

	UI_view2d_totRect_set(v2d, ar->winx - 1, info_textview_height(sinfo, ar, CTX_wm_reports(C)));
}

static void info_main_area_draw(const bContext *C, ARegion *ar)
{
	/* draw entirely, view changes should be handled here */
	SpaceInfo *sinfo = CTX_wm_space_info(C);
	View2D *v2d = &ar->v2d;
	View2DScrollers *scrollers;

	/* clear and setup matrix */
	UI_ThemeClearColor(TH_BACK);
	glClear(GL_COLOR_BUFFER_BIT);

	/* quick way to avoid drawing if not bug enough */
	if (ar->winy < 16)
		return;
		
	info_textview_update_rect(C, ar);

	/* worlks best with no view2d matrix set */
	UI_view2d_view_ortho(v2d);

	info_textview_main(sinfo, ar, CTX_wm_reports(C));

	/* reset view matrix */
	UI_view2d_view_restore(C);
	
	/* scrollers */
	scrollers = UI_view2d_scrollers_calc(C, v2d, V2D_ARG_DUMMY, V2D_ARG_DUMMY, V2D_ARG_DUMMY, V2D_GRID_CLAMP);
	UI_view2d_scrollers_draw(C, v2d, scrollers);
	UI_view2d_scrollers_free(scrollers);
}

static void info_operatortypes(void)
{
	WM_operatortype_append(FILE_OT_pack_all);
	WM_operatortype_append(FILE_OT_pack_libraries);
	WM_operatortype_append(FILE_OT_unpack_all);
	WM_operatortype_append(FILE_OT_unpack_item);
	WM_operatortype_append(FILE_OT_unpack_libraries);
	
	WM_operatortype_append(FILE_OT_make_paths_relative);
	WM_operatortype_append(FILE_OT_make_paths_absolute);
	WM_operatortype_append(FILE_OT_report_missing_files);
	WM_operatortype_append(FILE_OT_find_missing_files);
	WM_operatortype_append(INFO_OT_reports_display_update);

	/* info_report.c */
	WM_operatortype_append(INFO_OT_select_pick);
	WM_operatortype_append(INFO_OT_select_all_toggle);
	WM_operatortype_append(INFO_OT_select_border);

	WM_operatortype_append(INFO_OT_report_replay);
	WM_operatortype_append(INFO_OT_report_delete);
	WM_operatortype_append(INFO_OT_report_copy);
}

static void info_keymap(struct wmKeyConfig *keyconf)
{
	wmKeyMap *keymap = WM_keymap_find(keyconf, "Window", 0, 0);
	
	WM_keymap_verify_item(keymap, "INFO_OT_reports_display_update", TIMERREPORT, KM_ANY, KM_ANY, 0);

	/* info space */
	keymap = WM_keymap_find(keyconf, "Info", SPACE_INFO, 0);
	
	
	/* report selection */
	WM_keymap_add_item(keymap, "INFO_OT_select_pick", SELECTMOUSE, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "INFO_OT_select_all_toggle", AKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "INFO_OT_select_border", BKEY, KM_PRESS, 0, 0);

	WM_keymap_add_item(keymap, "INFO_OT_report_replay", RKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "INFO_OT_report_delete", XKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "INFO_OT_report_delete", DELKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "INFO_OT_report_copy", CKEY, KM_PRESS, KM_CTRL, 0);
}

/* add handlers, stuff you only do once or on area/region changes */
static void info_header_area_init(wmWindowManager *UNUSED(wm), ARegion *ar)
{
	ED_region_header_init(ar);
}

static void info_header_area_draw(const bContext *C, ARegion *ar)
{
	ED_region_header(C, ar);
}

static void info_main_area_listener(ARegion *ar, wmNotifier *wmn)
{
	// SpaceInfo *sinfo = sa->spacedata.first;

	/* context changes */
	switch (wmn->category) {
		case NC_SPACE:
			if (wmn->data == ND_SPACE_INFO_REPORT) {
				/* redraw also but only for report view, could do less redraws by checking the type */
				ED_region_tag_redraw(ar);
			}
			break;
	}
}

static void info_header_listener(ARegion *ar, wmNotifier *wmn)
{
	/* context changes */
	switch (wmn->category) {
		case NC_SCREEN:
			if (ELEM(wmn->data, ND_SCREENCAST, ND_ANIMPLAY))
				ED_region_tag_redraw(ar);
			break;
		case NC_WM:
			if (wmn->data == ND_JOB)
				ED_region_tag_redraw(ar);
			break;
		case NC_SCENE:
			if (wmn->data == ND_RENDER_RESULT)
				ED_region_tag_redraw(ar);
			break;
		case NC_SPACE:
			if (wmn->data == ND_SPACE_INFO)
				ED_region_tag_redraw(ar);
			break;
		case NC_ID:
			if (wmn->action == NA_RENAME)
				ED_region_tag_redraw(ar);
	}
	
}

static void recent_files_menu_draw(const bContext *UNUSED(C), Menu *menu)
{
	struct RecentFile *recent;
	char file[FILE_MAX];
	uiLayout *layout = menu->layout;
	uiLayoutSetOperatorContext(layout, WM_OP_EXEC_REGION_WIN);
	if (G.recent_files.first) {
		for (recent = G.recent_files.first; (recent); recent = recent->next) {
			BLI_split_file_part(recent->filepath, file, sizeof(file));
			if (BLO_has_bfile_extension(file))
				uiItemStringO(layout, BLI_path_basename(recent->filepath), ICON_FILE_BLEND, "WM_OT_open_mainfile", "filepath", recent->filepath);
			else
				uiItemStringO(layout, BLI_path_basename(recent->filepath), ICON_FILE_BACKUP, "WM_OT_open_mainfile", "filepath", recent->filepath);
		}
	}
	else {
		uiItemL(layout, IFACE_("No Recent Files"), ICON_NONE);
	}
}

static void recent_files_menu_register(void)
{
	MenuType *mt;

	mt = MEM_callocN(sizeof(MenuType), "spacetype info menu recent files");
	strcpy(mt->idname, "INFO_MT_file_open_recent");
	strcpy(mt->label, N_("Open Recent..."));
	mt->draw = recent_files_menu_draw;
	WM_menutype_add(mt);
}

/* only called once, from space/spacetypes.c */
void ED_spacetype_info(void)
{
	SpaceType *st = MEM_callocN(sizeof(SpaceType), "spacetype info");
	ARegionType *art;
	
	st->spaceid = SPACE_INFO;
	strncpy(st->name, "Info", BKE_ST_MAXNAME);
	
	st->new = info_new;
	st->free = info_free;
	st->init = info_init;
	st->duplicate = info_duplicate;
	st->operatortypes = info_operatortypes;
	st->keymap = info_keymap;
	
	/* regions: main window */
	art = MEM_callocN(sizeof(ARegionType), "spacetype info region");
	art->regionid = RGN_TYPE_WINDOW;
	art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D;

	art->init = info_main_area_init;
	art->draw = info_main_area_draw;
	art->listener = info_main_area_listener;

	BLI_addhead(&st->regiontypes, art);
	
	/* regions: header */
	art = MEM_callocN(sizeof(ARegionType), "spacetype info region");
	art->regionid = RGN_TYPE_HEADER;
	art->prefsizey = HEADERY;
	
	art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D | ED_KEYMAP_FRAMES | ED_KEYMAP_HEADER;
	art->listener = info_header_listener;
	art->init = info_header_area_init;
	art->draw = info_header_area_draw;
	
	BLI_addhead(&st->regiontypes, art);
	
	recent_files_menu_register();

	BKE_spacetype_register(st);
}
