/**
 * $Id$
 *
 * ***** 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2008 Blender Foundation.
 * All rights reserved.
 *
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

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

#include "DNA_ID.h"
#include "DNA_anim_types.h"
#include "DNA_space_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_windowmanager_types.h"

#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"

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

#include "ED_keyframing.h"
#include "ED_screen.h"
#include "ED_util.h"
#include "ED_types.h"

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

#include "BIF_gl.h"
#include "BIF_glutil.h"

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

#include "outliner_intern.h"


/* ************************ header area region *********************** */

static void do_viewmenu(bContext *C, void *arg, int event)
{
	ScrArea *curarea= CTX_wm_area(C);
	SpaceOops *soops= curarea->spacedata.first;
	
	switch(event) {
		case 0: /* Shuffle Selected Blocks */
			//shuffle_oops();
			break;
		case 1: /* Shrink Selected Blocks */
			//shrink_oops();
			break;
		case 2: /* View All */
			//do_oops_buttons(B_OOPSHOME);
			break;
		case 3: /* View All */
			//do_oops_buttons(B_OOPSVIEWSEL);
			break;
		case 4: /* Maximize Window */
			/* using event B_FULL */
			break;
			break;
		case 6:
			//outliner_toggle_visible(curarea);
			break;
		case 7:
			//outliner_show_hierarchy(curarea);
			break;
		case 8:
			//outliner_show_active(curarea);
			break;
		case 9:
			//outliner_one_level(curarea, 1);
			break;
		case 10:
			//outliner_one_level(curarea, -1);
			break;
		case 12:
			if (soops->flag & SO_HIDE_RESTRICTCOLS) soops->flag &= ~SO_HIDE_RESTRICTCOLS;
			else soops->flag |= SO_HIDE_RESTRICTCOLS;
			break;
	}
	ED_area_tag_redraw(curarea);
}

static uiBlock *outliner_viewmenu(bContext *C, ARegion *ar, void *arg_unused)
{
	ScrArea *curarea= CTX_wm_area(C);
	SpaceOops *soops= curarea->spacedata.first;
	uiBlock *block;
	short yco= 0, menuwidth=120;
	
	block= uiBeginBlock(C, ar, "outliner_viewmenu", UI_EMBOSSP);
	uiBlockSetButmFunc(block, do_viewmenu, NULL);
	
	if (soops->flag & SO_HIDE_RESTRICTCOLS)
		uiDefIconTextBut(block, BUTM, 1, ICON_CHECKBOX_DEHLT, "Show Restriction Columns", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 12, "");
	else
		uiDefIconTextBut(block, BUTM, 1, ICON_CHECKBOX_HLT, "Show Restriction Columns", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 12, "");
	
	uiDefBut(block, SEPR, 0, "",        0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
	
	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Expand One Level|NumPad +", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 9, "");
	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Collapse One Level|NumPad -", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 10, "");
	
	uiDefBut(block, SEPR, 0, "",        0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");  
	
	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Show/Hide All", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 6, "");
	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Show Hierarchy|Home", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 7, "");
	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Show Active|NumPad .", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 8, "");
	
//	uiDefBut(block, SEPR, 0, "",        0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");  
//	if(!curarea->full) uiDefIconTextBut(block, BUTM, B_FULL, ICON_BLANK1, "Maximize Window|Ctrl UpArrow", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 4, "");
//	else uiDefIconTextBut(block, BUTM, B_FULL, ICON_BLANK1, "Tile Window|Ctrl DownArrow", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 4, "");
	
	
	if(curarea->headertype==HEADERTOP) {
		uiBlockSetDirection(block, UI_DOWN);
	}
	else {
		uiBlockSetDirection(block, UI_TOP);
		uiBlockFlipOrder(block);
	}
	
	uiTextBoundsBlock(block, 50);
	uiEndBlock(C, block);
	
	return block;
}

enum {
	B_REDR	= 1,
	
	B_KEYINGSET_CHANGE,
	B_KEYINGSET_REMOVE,
} eOutlinerHeader_Events;

static void do_outliner_buttons(bContext *C, void *arg, int event)
{
	ScrArea *sa= CTX_wm_area(C);
	Scene *scene= CTX_data_scene(C);
	
	switch(event) {
		case B_REDR:
			ED_area_tag_redraw(sa);
			break;
			
		case B_KEYINGSET_CHANGE:
			/* add a new KeyingSet if active is -1 */
			if (scene->active_keyingset == -1) {
				// XXX the default settings have yet to evolve... need to keep this in sync with the 
				BKE_keyingset_add(&scene->keyingsets, NULL, KEYINGSET_ABSOLUTE, 0);
				scene->active_keyingset= BLI_countlist(&scene->keyingsets);
			}
			
			/* redraw regions with KeyingSet info */
			WM_event_add_notifier(C, NC_SCENE|ND_KEYINGSET, scene);
			break;
			
		case B_KEYINGSET_REMOVE:
			/* remove the active KeyingSet */
			if (scene->active_keyingset) {
				KeyingSet *ks= BLI_findlink(&scene->keyingsets, scene->active_keyingset-1);
				
				/* firstly free KeyingSet's data, then free the KeyingSet itself */
				if (ks) {
					BKE_keyingset_free(ks);
					BLI_freelinkN(&scene->keyingsets, ks);
					scene->active_keyingset= 0;
				}
				else
					scene->active_keyingset= 0;
			}
			
			/* redraw regions with KeyingSet info */
			WM_event_add_notifier(C, NC_SCENE|ND_KEYINGSET, scene);
			break;
	}
}


void outliner_header_buttons(const bContext *C, ARegion *ar)
{
	ScrArea *sa= CTX_wm_area(C);
	Scene *scene= CTX_data_scene(C);
	SpaceOops *soutliner= CTX_wm_space_outliner(C);
	uiBlock *block;
	int xco, yco= 3, xmax;
	
	block= uiBeginBlock(C, ar, "header buttons", UI_EMBOSS);
	uiBlockSetHandleFunc(block, do_outliner_buttons, NULL);
	
	xco= ED_area_header_standardbuttons(C, block, yco);
	
	if((sa->flag & HEADER_NO_PULLDOWN)==0) {
		
		xmax= GetButStringLength("View");
		uiDefPulldownBut(block, outliner_viewmenu, CTX_wm_area(C), 
						 "View", xco, yco-2, xmax-3, 24, ""); 
		xco += xmax;
		
		/* header text */
		xco += XIC;
		
		uiBlockSetEmboss(block, UI_EMBOSS);
	}
	
	/* data selector*/
	if(G.main->library.first) 
		uiDefButS(block, MENU, B_REDR, "Outliner Display%t|Libraries %x7|All Scenes %x0|Current Scene %x1|Visible Layers %x2|Groups %x6|Same Types %x5|Selected %x3|Active %x4|Sequence %x10|Datablocks %x11|User Preferences %x12||Key Maps %x13",	 xco, yco, 120, 20,  &soutliner->outlinevis, 0, 0, 0, 0, "");
	else
		uiDefButS(block, MENU, B_REDR, "Outliner Display%t|All Scenes %x0|Current Scene %x1|Visible Layers %x2|Groups %x6|Same Types %x5|Selected %x3|Active %x4|Sequence %x10|Datablocks %x11|User Preferences %x12||Key Maps %x13",	 xco, yco, 120, 20,  &soutliner->outlinevis, 0, 0, 0, 0, "");	
	xco += 120;
	
	/* KeyingSet editing buttons */
	if ((soutliner->flag & SO_HIDE_KEYINGSETINFO)==0 && (soutliner->outlinevis==SO_DATABLOCKS)) {
		KeyingSet *ks= NULL;
		char *menustr= NULL;
		
		xco+= (int)(XIC*1.5);
		
		if (scene->active_keyingset)
			ks= (KeyingSet *)BLI_findlink(&scene->keyingsets, scene->active_keyingset-1);
		
		uiBlockBeginAlign(block);
			/* currently 'active' KeyingSet */
			menustr= ANIM_build_keyingsets_menu(&scene->keyingsets, 1);
			uiDefButI(block, MENU, B_KEYINGSET_CHANGE, menustr, xco,yco, 18,20, &scene->active_keyingset, 0, 0, 0, 0, "Browse Keying Sets");
			MEM_freeN(menustr);
			xco += 18;
			
			/* currently 'active' KeyingSet - change name */
			if (ks) {
				/* active KeyingSet */
				uiDefBut(block, TEX, B_KEYINGSET_CHANGE,"", xco,yco,120,20, ks->name, 0, 63, 0, 0, "Name of Active Keying Set");
				xco += 120;
				uiDefIconBut(block, BUT, B_KEYINGSET_REMOVE, VICON_X, xco, yco, 20, 20, NULL, 0.0, 0.0, 0.0, 0.0, "Remove this Keying Set");
				xco += 20;
			}
			else {
				/* no active KeyingSet... so placeholder instead */
				uiDefBut(block, LABEL, 0,"<No Keying Set Active>", xco,yco,140,20, NULL, 0, 63, 0, 0, "Name of Active Keying Set");
				xco += 140;
			}
		uiBlockEndAlign(block);
		
		/* current 'active' KeyingSet */
		if (ks) {
			xco += 5;
			
			/* operator buttons to add/remove selected items from set */
			uiBlockBeginAlign(block);
					// XXX the icons here are temporary
				uiDefIconButO(block, BUT, "OUTLINER_OT_keyingset_remove_selected", WM_OP_INVOKE_REGION_WIN, ICON_ZOOMOUT, xco,yco,XIC,YIC, "Remove selected properties from active Keying Set (Alt-K)");
				xco += XIC;
				uiDefIconButO(block, BUT, "OUTLINER_OT_keyingset_add_selected", WM_OP_INVOKE_REGION_WIN, ICON_ZOOMIN, xco,yco,XIC,YIC, "Add selected properties to active Keying Set (K)");
				xco += XIC;
			uiBlockEndAlign(block);
			
			xco += 10;
			
			/* operator buttons to insert/delete keyframes for the active set */
			uiBlockBeginAlign(block);
				uiDefIconButO(block, BUT, "ANIM_OT_delete_keyframe", WM_OP_INVOKE_REGION_WIN, ICON_KEY_DEHLT, xco,yco,XIC,YIC, "Delete Keyframes for the Active Keying Set (Alt-I)");
				xco+= XIC;
				uiDefIconButO(block, BUT, "ANIM_OT_insert_keyframe", WM_OP_INVOKE_REGION_WIN, ICON_KEY_HLT, xco,yco,XIC,YIC, "Insert Keyframes for the Active Keying Set (I)");
				xco+= XIC;
			uiBlockEndAlign(block);
		}
		
		xco += XIC*2;
	}
	
	/* always as last  */
	UI_view2d_totRect_set(&ar->v2d, xco+XIC+100, (int)(ar->v2d.tot.ymax-ar->v2d.tot.ymin));
	
	uiEndBlock(C, block);
	uiDrawBlock(C, block);
}