/**
 * $Id$
 *
 * ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * Contributor(s): Ton Roosendaal, Blender Foundation '05, full recode.
 *				 Joshua Leung
 *
 * ***** END GPL LICENSE BLOCK *****
 * support for animation modes - Reevan McKay
 */

#include <stdlib.h>
#include <stddef.h>
#include <string.h>

#include "MEM_guardedalloc.h"

#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_dynstr.h"

#include "DNA_anim_types.h"
#include "DNA_armature_types.h"
#include "DNA_constraint_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"

#include "BKE_anim.h"
#include "BKE_idprop.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_context.h"
#include "BKE_constraint.h"
#include "BKE_deform.h"
#include "BKE_depsgraph.h"
#include "BKE_modifier.h"
#include "BKE_report.h"

#include "BIF_gl.h"

#include "RNA_access.h"
#include "RNA_define.h"

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

#include "ED_armature.h"
#include "ED_keyframing.h"
#include "ED_mesh.h"
#include "ED_screen.h"

#include "UI_interface.h"

#include "armature_intern.h"

/* ************* XXX *************** */
static int pupmenu(const char *dummy) {return 0;}
static void error(const char *dummy) {};
static void BIF_undo_push(const char *dummy) {}
/* ************* XXX *************** */

/* This function is used to indicate that a bone is selected and needs keyframes inserted */
void set_pose_keys (Object *ob)
{
	bArmature *arm= ob->data;
	bPoseChannel *chan;

	if (ob->pose){
		for (chan=ob->pose->chanbase.first; chan; chan=chan->next){
			Bone *bone= chan->bone;
			if ((bone) && (bone->flag & BONE_SELECTED) && (arm->layer & bone->layer))
				chan->flag |= POSE_KEY;	
			else
				chan->flag &= ~POSE_KEY;
		}
	}
}

/* This function is used to process the necessary updates for */
void ED_armature_enter_posemode(bContext *C, Base *base)
{
	Object *ob= base->object;
	
	if (ob->id.lib){
		error ("Can't pose libdata");
		return;
	}
	
	switch (ob->type){
		case OB_ARMATURE:
			ob->restore_mode = ob->mode;
			ob->mode |= OB_MODE_POSE;
			
			WM_event_add_notifier(C, NC_SCENE|ND_MODE|NS_MODE_POSE, NULL);
			
			break;
		default:
			return;
	}

	//ED_object_toggle_modes(C, ob->mode);
}

void ED_armature_exit_posemode(bContext *C, Base *base)
{
	if(base) {
		Object *ob= base->object;
		
		ob->restore_mode = ob->mode;
		ob->mode &= ~OB_MODE_POSE;
		
		WM_event_add_notifier(C, NC_SCENE|ND_MODE|NS_MODE_OBJECT, NULL);
	}	
}

/* if a selected or active bone is protected, throw error (oonly if warn==1) and return 1 */
/* only_selected==1 : the active bone is allowed to be protected */
static short pose_has_protected_selected(Object *ob, short only_selected, short warn)
{
	/* check protection */
	if (ob->proxy) {
		bPoseChannel *pchan;
		bArmature *arm= ob->data;

		for (pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
			if (pchan->bone && (pchan->bone->layer & arm->layer)) {
				if (pchan->bone->layer & arm->layer_protected) {
					if (only_selected && (pchan->bone == arm->act_bone));
					else if (pchan->bone->flag & BONE_SELECTED || pchan->bone == arm->act_bone)
					   break;
				}
			}
		}
		if (pchan) {
			if (warn) error("Cannot change Proxy protected bones");
			return 1;
		}
	}
	return 0;
}

/* only for real IK, not for auto-IK */
int ED_pose_channel_in_IK_chain(Object *ob, bPoseChannel *pchan)
{
	bConstraint *con;
	Bone *bone;
	
	/* No need to check if constraint is active (has influence),
	 * since all constraints with CONSTRAINT_IK_AUTO are active */
	for(con= pchan->constraints.first; con; con= con->next) {
		if(con->type==CONSTRAINT_TYPE_KINEMATIC) {
			bKinematicConstraint *data= con->data;
			if((data->flag & CONSTRAINT_IK_AUTO)==0)
				return 1;
		}
	}
	for(bone= pchan->bone->childbase.first; bone; bone= bone->next) {
		pchan= get_pose_channel(ob->pose, bone->name);
		if(pchan && ED_pose_channel_in_IK_chain(ob, pchan))
			return 1;
	}
	return 0;
}

/* ********************************************** */
/* Motion Paths */

/* For the object with pose/action: update paths for those that have got them
 * This should selectively update paths that exist...
 *
 * To be called from various tools that do incremental updates 
 */
void ED_pose_recalculate_paths(bContext *C, Scene *scene, Object *ob)
{
	ListBase targets = {NULL, NULL};
	
	/* set flag to force recalc, then grab the relevant bones to target */
	ob->pose->avs.recalc |= ANIMVIZ_RECALC_PATHS;
	animviz_get_object_motionpaths(ob, &targets);
	
	/* recalculate paths, then free */
	animviz_calc_motionpaths(scene, &targets);
	BLI_freelistN(&targets);
}

/* For the object with pose/action: create path curves for selected bones 
 * This recalculates the WHOLE path within the pchan->pathsf and pchan->pathef range
 */
static int pose_calculate_paths_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Scene *scene= CTX_data_scene(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
		
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	
	/* set up path data for bones being calculated */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones) 
	{
		/* verify makes sure that the selected bone has a bone with the appropriate settings */
		animviz_verify_motionpaths(scene, ob, pchan);
	}
	CTX_DATA_END;
	
	/* calculate the bones that now have motionpaths... */
	// TODO: only make for the selected bones?
	ED_pose_recalculate_paths(C, scene, ob);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED; 
}

void POSE_OT_paths_calculate (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Calculate Bone Paths";
	ot->idname= "POSE_OT_paths_calculate";
	ot->description= "Calculate paths for the selected bones";
	
	/* api callbacks */
	ot->exec= pose_calculate_paths_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* --------- */

/* for the object with pose/action: clear path curves for selected bones only */
void ED_pose_clear_paths(Object *ob)
{
	bPoseChannel *pchan;
	short skipped = 0;
	
	if ELEM(NULL, ob, ob->pose)
		return;
	
	/* free the motionpath blocks, but also take note of whether we skipped some... */
	for (pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
		if (pchan->mpath) {
			if ((pchan->bone) && (pchan->bone->flag & BONE_SELECTED)) {
				animviz_free_motionpath(pchan->mpath);
				pchan->mpath= NULL;
			}
			else 
				skipped = 1;
		}
	}
	
	/* if we didn't skip any, we shouldn't have any paths left */
	if (skipped == 0)
		ob->pose->avs.path_bakeflag &= ~MOTIONPATH_BAKE_HAS_PATHS;
}

/* operator callback for this */
static int pose_clear_paths_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
		
	/* only continue if there's an object */
	if ELEM(NULL, ob, ob->pose)
		return OPERATOR_CANCELLED;
	
	/* use the backend function for this */
	ED_pose_clear_paths(ob);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED; 
}

void POSE_OT_paths_clear (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Clear Bone Paths";
	ot->idname= "POSE_OT_paths_clear";
	ot->description= "Clear path caches for selected bones";
	
	/* api callbacks */
	ot->exec= pose_clear_paths_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ******************* Select Constraint Target Operator ************* */

static int pose_select_constraint_target_exec(bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm= ob->data;
	bConstraint *con;
	int found= 0;
	
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
	{
		if ((pchan->bone->flag & BONE_SELECTED) || (pchan->bone == arm->act_bone)) {
			for (con= pchan->constraints.first; con; con= con->next) {
				bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
				ListBase targets = {NULL, NULL};
				bConstraintTarget *ct;
				
				if (cti && cti->get_constraint_targets) {
					cti->get_constraint_targets(con, &targets);
					
					for (ct= targets.first; ct; ct= ct->next) {
						if ((ct->tar == ob) && (ct->subtarget[0])) {
							bPoseChannel *pchanc= get_pose_channel(ob->pose, ct->subtarget);
							if((pchanc) && !(pchanc->bone->flag & BONE_UNSELECTABLE)) {
								pchanc->bone->flag |= BONE_SELECTED|BONE_TIPSEL|BONE_ROOTSEL;
								found= 1;
							}
						}
					}
					
					if (cti->flush_constraint_targets)
						cti->flush_constraint_targets(con, &targets, 1);
				}
			}
		}
	}
	CTX_DATA_END;

	if (!found)
		return OPERATOR_CANCELLED;

	WM_event_add_notifier(C, NC_OBJECT|ND_BONE_SELECT, ob);

	return OPERATOR_FINISHED;
}

void POSE_OT_select_constraint_target(wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Select Constraint Target";
	ot->idname= "POSE_OT_select_constraint_target";
	
	/* api callbacks */
	ot->exec= pose_select_constraint_target_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ******************* select hierarchy operator ************* */

static int pose_select_hierarchy_exec(bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm= ob->data;
	Bone *curbone, *pabone, *chbone;
	int direction = RNA_enum_get(op->ptr, "direction");
	int add_to_sel = RNA_boolean_get(op->ptr, "extend");
	int found= 0;
	
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
	{
		curbone= pchan->bone;
		
		if ((curbone->flag & BONE_UNSELECTABLE)==0) {
			if (curbone == arm->act_bone) {
				if (direction == BONE_SELECT_PARENT) {
					if (pchan->parent == NULL) continue;
					else pabone= pchan->parent->bone;
					
					if ((arm->layer & pabone->layer) && !(pabone->flag & BONE_HIDDEN_P)) {
						if (!add_to_sel) curbone->flag &= ~BONE_SELECTED;
						pabone->flag |= BONE_SELECTED;
						arm->act_bone= pabone;
						
						found= 1;
						break;
					}
				} 
				else { /* direction == BONE_SELECT_CHILD */
					if (pchan->child == NULL) continue;
					else chbone = pchan->child->bone;
					
					if ((arm->layer & chbone->layer) && !(chbone->flag & BONE_HIDDEN_P)) {
						if (!add_to_sel) curbone->flag &= ~BONE_SELECTED;
						chbone->flag |= BONE_SELECTED;
						arm->act_bone= chbone;
						
						found= 1;
						break;
					}
				}
			}
		}
	}
	CTX_DATA_END;

	if (found == 0)
		return OPERATOR_CANCELLED;

	WM_event_add_notifier(C, NC_OBJECT|ND_BONE_SELECT, ob);

	return OPERATOR_FINISHED;
}

void POSE_OT_select_hierarchy(wmOperatorType *ot)
{
	static EnumPropertyItem direction_items[]= {
	{BONE_SELECT_PARENT, "PARENT", 0, "Select Parent", ""},
	{BONE_SELECT_CHILD, "CHILD", 0, "Select Child", ""},
	{0, NULL, 0, NULL, NULL}
	};
	
	/* identifiers */
	ot->name= "Select Hierarchy";
	ot->idname= "POSE_OT_select_hierarchy";
	
	/* api callbacks */
	ot->exec= pose_select_hierarchy_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* props */
	ot->prop= RNA_def_enum(ot->srna, "direction", direction_items, BONE_SELECT_PARENT, "Direction", "");
	RNA_def_boolean(ot->srna, "extend", 0, "Add to Selection", "");
	
}

/* ******************* select grouped operator ************* */

static short pose_select_same_group (bContext *C, Object *ob, short extend)
{
	bArmature *arm= (ob)? ob->data : NULL;
	bPose *pose= (ob)? ob->pose : NULL;
	char *group_flags;
	int numGroups = 0;
	short changed=0, tagged=0;
	
	/* sanity checks */
	if (ELEM3(NULL, ob, pose, arm))
		return 0;
		
	/* count the number of groups */
	numGroups= BLI_countlist(&pose->agroups);
	if (numGroups == 0)
		return 0;
		
	/* alloc a small array to keep track of the groups to use 
	 * 	- each cell stores on/off state for whether group should be used
	 *	- size is numGroups + 1, since index=0 is used for no-group
	 */
	group_flags= MEM_callocN(numGroups+1, "pose_select_same_group");
	
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
	{
		/* keep track of group as group to use later? */
		if ((pchan->bone->flag & BONE_SELECTED) || (pchan->bone == arm->act_bone)) {
			group_flags[pchan->agrp_index] = 1;
			tagged= 1;
		}
		
		/* deselect all bones before selecting new ones? */
		if ((extend == 0) && (pchan->bone->flag & BONE_UNSELECTABLE)==0)
			pchan->bone->flag &= ~BONE_SELECTED;
	}
	CTX_DATA_END;
	
	/* small optimisation: only loop through bones a second time if there are any groups tagged */
	if (tagged) {
		/* only if group matches (and is not selected or current bone) */
		CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
		{
			if ((pchan->bone->flag & BONE_UNSELECTABLE)==0) {
				/* check if the group used by this bone is counted */
				if (group_flags[pchan->agrp_index]) {
					pchan->bone->flag |= BONE_SELECTED;
					changed= 1;
				}
			}
		}
		CTX_DATA_END;
	}
	
	/* free temp info */
	MEM_freeN(group_flags);
	
	return changed;
}

static short pose_select_same_layer (bContext *C, Object *ob, short extend)
{
	bPose *pose= (ob)? ob->pose : NULL;
	bArmature *arm= (ob)? ob->data : NULL;
	short changed= 0;
	int layers= 0;
	
	if (ELEM3(NULL, ob, pose, arm))
		return 0;
	
	/* figure out what bones are selected */
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
	{
		/* keep track of layers to use later? */
		if ((pchan->bone->flag & BONE_SELECTED) || (pchan->bone == arm->act_bone))
			layers |= pchan->bone->layer;
			
		/* deselect all bones before selecting new ones? */
		if ((extend == 0) && (pchan->bone->flag & BONE_UNSELECTABLE)==0)
			pchan->bone->flag &= ~BONE_SELECTED;
	}
	CTX_DATA_END;
	if (layers == 0) 
		return 0;
		
	/* select bones that are on same layers as layers flag */
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, visible_pose_bones) 
	{
		/* if bone is on a suitable layer, and the bone can have its selection changed, select it */
		if ((layers & pchan->bone->layer) && (pchan->bone->flag & BONE_UNSELECTABLE)==0) {
			pchan->bone->flag |= BONE_SELECTED;
			changed= 1;
		}
	}
	CTX_DATA_END;
	
	return changed;
}


static int pose_select_grouped_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	short extend= RNA_boolean_get(op->ptr, "extend");
	short changed = 0;
	
	/* sanity check */
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
		
	/* selection types 
	 * NOTE: for the order of these, see the enum in POSE_OT_select_grouped()
	 */
	switch (RNA_enum_get(op->ptr, "type")) {
		case 1: /* group */
			changed= pose_select_same_group(C, ob, extend);
			break;
		default: /* layer */
			changed= pose_select_same_layer(C, ob, extend);
			break;
	}
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	/* report done status */
	if (changed)
		return OPERATOR_FINISHED;
	else
		return OPERATOR_CANCELLED;
}

void POSE_OT_select_grouped (wmOperatorType *ot)
{
	static EnumPropertyItem prop_select_grouped_types[] = {
		{0, "LAYER", 0, "Layer", "Shared layers"},
		{1, "GROUP", 0, "Group", "Shared group"},
		{0, NULL, 0, NULL, NULL}
	};

	/* identifiers */
	ot->name= "Select Grouped";
	ot->description = "Select all visible bones grouped by various properties";
	ot->idname= "POSE_OT_select_grouped";
	
	/* api callbacks */
	ot->invoke= WM_menu_invoke;
	ot->exec= pose_select_grouped_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean(ot->srna, "extend", FALSE, "Extend", "Extend selection instead of deselecting everything first.");
	ot->prop= RNA_def_enum(ot->srna, "type", prop_select_grouped_types, 0, "Type", "");
}

/* ********************************************** */

void pose_copy_menu(Scene *scene)
{
	Object *obedit= scene->obedit; // XXX context
	Object *ob= OBACT;
	bArmature *arm= ob->data;
	bPoseChannel *pchan, *pchanact;
	short nr=0;
	int i=0;
	
	/* paranoia checks */
	if (ELEM(NULL, ob, ob->pose)) return;
	if ((ob==obedit) || (ob->mode & OB_MODE_POSE)==0) return;
	
	pchan= get_active_posechannel(ob);
	
	if (pchan==NULL) return;
	pchanact= pchan;
	
	/* if proxy-protected bones selected, some things (such as locks + displays) shouldn't be changable, 
	 * but for constraints (just add local constraints)
	 */
	if (pose_has_protected_selected(ob, 1, 0)) {
		i= BLI_countlist(&(pchanact->constraints)); /* if there are 24 or less, allow for the user to select constraints */
		if (i < 25)
			nr= pupmenu("Copy Pose Attributes %t|Local Location%x1|Local Rotation%x2|Local Size%x3|%l|Visual Location %x9|Visual Rotation%x10|Visual Size%x11|%l|Constraints (All)%x4|Constraints...%x5");
		else
			nr= pupmenu("Copy Pose Attributes %t|Local Location%x1|Local Rotation%x2|Local Size%x3|%l|Visual Location %x9|Visual Rotation%x10|Visual Size%x11|%l|Constraints (All)%x4");
	}
	else {
		i= BLI_countlist(&(pchanact->constraints)); /* if there are 24 or less, allow for the user to select constraints */
		if (i < 25)
			nr= pupmenu("Copy Pose Attributes %t|Local Location%x1|Local Rotation%x2|Local Size%x3|%l|Visual Location %x9|Visual Rotation%x10|Visual Size%x11|%l|Constraints (All)%x4|Constraints...%x5|%l|Transform Locks%x6|IK Limits%x7|Bone Shape%x8");
		else
			nr= pupmenu("Copy Pose Attributes %t|Local Location%x1|Local Rotation%x2|Local Size%x3|%l|Visual Location %x9|Visual Rotation%x10|Visual Size%x11|%l|Constraints (All)%x4|%l|Transform Locks%x6|IK Limits%x7|Bone Shape%x8");
	}
	
	if (nr <= 0) 
		return;
	
	if (nr != 5)  {
		for (pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
			if ( (arm->layer & pchan->bone->layer) &&
				 (pchan->bone->flag & BONE_SELECTED) &&
				 (pchan != pchanact) ) 
			{
				switch (nr) {
					case 1: /* Local Location */
						VECCOPY(pchan->loc, pchanact->loc);
						break;
					case 2: /* Local Rotation */
						QUATCOPY(pchan->quat, pchanact->quat);
						VECCOPY(pchan->eul, pchanact->eul);
						break;
					case 3: /* Local Size */
						VECCOPY(pchan->size, pchanact->size);
						break;
					case 4: /* All Constraints */
					{
						ListBase tmp_constraints = {NULL, NULL};
						
						/* copy constraints to tmpbase and apply 'local' tags before 
						 * appending to list of constraints for this channel
						 */
						copy_constraints(&tmp_constraints, &pchanact->constraints, TRUE);
						if ((ob->proxy) && (pchan->bone->layer & arm->layer_protected)) {
							bConstraint *con;
							
							/* add proxy-local tags */
							for (con= tmp_constraints.first; con; con= con->next)
								con->flag |= CONSTRAINT_PROXY_LOCAL;
						}
						addlisttolist(&pchan->constraints, &tmp_constraints);
						
						/* update flags (need to add here, not just copy) */
						pchan->constflag |= pchanact->constflag;
						
						if (ob->pose)
							ob->pose->flag |= POSE_RECALC;
					}
						break;
					case 6: /* Transform Locks */
						pchan->protectflag = pchanact->protectflag;
						break;
					case 7: /* IK (DOF) settings */
					{
						pchan->ikflag = pchanact->ikflag;
						VECCOPY(pchan->limitmin, pchanact->limitmin);
						VECCOPY(pchan->limitmax, pchanact->limitmax);
						VECCOPY(pchan->stiffness, pchanact->stiffness);
						pchan->ikstretch= pchanact->ikstretch;
						pchan->ikrotweight= pchanact->ikrotweight;
						pchan->iklinweight= pchanact->iklinweight;
					}
						break;
					case 8: /* Custom Bone Shape */
						pchan->custom = pchanact->custom;
						break;
					case 9: /* Visual Location */
						armature_loc_pose_to_bone(pchan, pchanact->pose_mat[3], pchan->loc);
						break;
					case 10: /* Visual Rotation */
					{
						float delta_mat[4][4];
						
						armature_mat_pose_to_bone(pchan, pchanact->pose_mat, delta_mat);
						
						if (pchan->rotmode == ROT_MODE_AXISANGLE) {
							float tmp_quat[4];
							
							/* need to convert to quat first (in temp var)... */
							mat4_to_quat( tmp_quat,delta_mat);
							quat_to_axis_angle( pchan->rotAxis, &pchan->rotAngle,tmp_quat);
						}
						else if (pchan->rotmode == ROT_MODE_QUAT)
							mat4_to_quat( pchan->quat,delta_mat);
						else
							mat4_to_eulO( pchan->eul, pchan->rotmode,delta_mat);
					}
						break;
					case 11: /* Visual Size */
					{
						float delta_mat[4][4], size[4];
						
						armature_mat_pose_to_bone(pchan, pchanact->pose_mat, delta_mat);
						mat4_to_size( size,delta_mat);
						VECCOPY(pchan->size, size);
					}
				}
			}
		}
	} 
	else { /* constraints, optional (note: max we can have is 24 constraints) */
		bConstraint *con, *con_back;
		int const_toggle[24];
		ListBase const_copy = {NULL, NULL};
		
		BLI_duplicatelist(&const_copy, &(pchanact->constraints));
		
		/* build the puplist of constraints */
		for (con = pchanact->constraints.first, i=0; con; con=con->next, i++){
			const_toggle[i]= 1;
//			add_numbut(i, TOG|INT, con->name, 0, 0, &(const_toggle[i]), "");
		}
		
//		if (!do_clever_numbuts("Select Constraints", i, REDRAW)) {
//			BLI_freelistN(&const_copy);
//			return;
//		}
		
		/* now build a new listbase from the options selected */
		for (i=0, con=const_copy.first; con; i++) {
			/* if not selected, free/remove it from the list */
			if (!const_toggle[i]) {
				con_back= con->next;
				BLI_freelinkN(&const_copy, con);
				con= con_back;
			} 
			else
				con= con->next;
		}
		
		/* Copy the temo listbase to the selected posebones */
		for (pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
			if ( (arm->layer & pchan->bone->layer) &&
				 (pchan->bone->flag & BONE_SELECTED) &&
				 (pchan!=pchanact) ) 
			{
				ListBase tmp_constraints = {NULL, NULL};
				
				/* copy constraints to tmpbase and apply 'local' tags before 
				 * appending to list of constraints for this channel
				 */
				copy_constraints(&tmp_constraints, &const_copy, TRUE);
				if ((ob->proxy) && (pchan->bone->layer & arm->layer_protected)) {
					bConstraint *con;
					
					/* add proxy-local tags */
					for (con= tmp_constraints.first; con; con= con->next)
						con->flag |= CONSTRAINT_PROXY_LOCAL;
				}
				addlisttolist(&pchan->constraints, &tmp_constraints);
				
				/* update flags (need to add here, not just copy) */
				pchan->constflag |= pchanact->constflag;
			}
		}
		BLI_freelistN(&const_copy);
		update_pose_constraint_flags(ob->pose); /* we could work out the flags but its simpler to do this */
		
		if (ob->pose)
			ob->pose->flag |= POSE_RECALC;
	}
	
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);	// and all its relations
	
	BIF_undo_push("Copy Pose Attributes");
	
}

/* ******************** copy/paste pose ********************** */

/* Global copy/paste buffer for pose - cleared on start/end session + before every copy operation */
static bPose *g_posebuf = NULL;

void free_posebuf(void) 
{
	if (g_posebuf) {
		bPoseChannel *pchan;
		
		for (pchan= g_posebuf->chanbase.first; pchan; pchan= pchan->next) {
			if(pchan->prop) {
				IDP_FreeProperty(pchan->prop);
				MEM_freeN(pchan->prop);
			}
		}
		
		/* was copied without constraints */
		BLI_freelistN(&g_posebuf->chanbase);
		MEM_freeN(g_posebuf);
	}
	
	g_posebuf=NULL;
}

/* ---- */

static int pose_copy_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	
	/* sanity checking */
	if ELEM(NULL, ob, ob->pose) {
		BKE_report(op->reports, RPT_ERROR, "No Pose to Copy");
		return OPERATOR_CANCELLED;
	}

	/* free existing pose buffer */
	free_posebuf();
	
	/* sets chan->flag to POSE_KEY if bone selected, then copy those bones to the buffer */
	set_pose_keys(ob);  
	copy_pose(&g_posebuf, ob->pose, 0);
	
	
	return OPERATOR_FINISHED;
}

void POSE_OT_copy (wmOperatorType *ot) 
{
	/* identifiers */
	ot->name= "Copy Pose";
	ot->idname= "POSE_OT_copy";
	ot->description= "Copies the current pose of the selected bones to copy/paste buffer";
	
	/* api callbacks */
	ot->exec= pose_copy_exec;
	ot->poll= ED_operator_posemode;
	
	/* flag */
	ot->flag= OPTYPE_REGISTER;
}

/* ---- */

static int pose_paste_exec (bContext *C, wmOperator *op)
{
	Scene *scene= CTX_data_scene(C);
	Object *ob= CTX_data_active_object(C);
	bPoseChannel *chan, *pchan;
	int flip= RNA_boolean_get(op->ptr, "flipped");
	
	/* sanity checks */
	if ELEM(NULL, ob, ob->pose)
		return OPERATOR_CANCELLED;

	if (g_posebuf == NULL) {
		BKE_report(op->reports, RPT_ERROR, "Copy buffer is empty");
		return OPERATOR_CANCELLED;
	}
	
	/* Safely merge all of the channels in the buffer pose into any existing pose */
	for (chan= g_posebuf->chanbase.first; chan; chan=chan->next) {
		if (chan->flag & POSE_KEY) {
			/* get the name - if flipping, we must flip this first */
			char name[32];
			if (flip)
				flip_side_name(name, chan->name, 0);		/* 0 = don't strip off number extensions */
			else
				BLI_strncpy(name, chan->name, sizeof(name));

			/* only copy when channel exists, poses are not meant to add random channels to anymore */
			pchan= get_pose_channel(ob->pose, name);
			
			if (pchan) {
				/* only loc rot size 
				 *	- only copies transform info for the pose 
				 */
				VECCOPY(pchan->loc, chan->loc);
				VECCOPY(pchan->size, chan->size);
				pchan->flag= chan->flag;
				
				/* check if rotation modes are compatible (i.e. do they need any conversions) */
				if (pchan->rotmode == chan->rotmode) {
					/* copy the type of rotation in use */
					if (pchan->rotmode > 0) {
						VECCOPY(pchan->eul, chan->eul);
					}
					else if (pchan->rotmode == ROT_MODE_AXISANGLE) {
						VECCOPY(pchan->rotAxis, chan->rotAxis);
						pchan->rotAngle = chan->rotAngle;
					}
					else {
						QUATCOPY(pchan->quat, chan->quat);
					}
				}
				else if (pchan->rotmode > 0) {
					/* quat/axis-angle to euler */
					if (chan->rotmode == ROT_MODE_AXISANGLE)
						axis_angle_to_eulO( pchan->eul, pchan->rotmode,chan->rotAxis, chan->rotAngle);
					else
						quat_to_eulO( pchan->eul, pchan->rotmode,chan->quat);
				}
				else if (pchan->rotmode == ROT_MODE_AXISANGLE) {
					/* quat/euler to axis angle */
					if (chan->rotmode > 0)
						eulO_to_axis_angle(pchan->rotAxis, &pchan->rotAngle, chan->eul, chan->rotmode);
					else	
						quat_to_axis_angle(pchan->rotAxis, &pchan->rotAngle, chan->quat);
				}
				else {
					/* euler/axis-angle to quat */
					if (chan->rotmode > 0)
						eulO_to_quat(pchan->quat, chan->eul, chan->rotmode);
					else
						axis_angle_to_quat(pchan->quat, chan->rotAxis, pchan->rotAngle);
				}
				
				/* paste flipped pose? */
				if (flip) {
					pchan->loc[0]*= -1;
					
					/* has to be done as eulers... */
					if (pchan->rotmode > 0) {
						pchan->eul[1] *= -1;
						pchan->eul[2] *= -1;
					}
					else if (pchan->rotmode == ROT_MODE_AXISANGLE) {
						float eul[3];
						
						axis_angle_to_eulO(eul, EULER_ORDER_DEFAULT, pchan->rotAxis, pchan->rotAngle);
						eul[1]*= -1;
						eul[2]*= -1;
						eulO_to_axis_angle(pchan->rotAxis, &pchan->rotAngle, eul, EULER_ORDER_DEFAULT);
					}
					else {
						float eul[3];
						
						quat_to_eul(eul, pchan->quat);
						eul[1]*= -1;
						eul[2]*= -1;
						eul_to_quat(pchan->quat, eul);
					}
				}
				
				/* ID properties 
				 *	- only free the existing properties if the channel we're copying from has them
				 * 	  NOTE: this means that if the pose depends on some pchan property, the pose may not be ok,
				 *		    but this is better than loosing all the setting you've painstakingly added...
				 */
				if (chan->prop) {
					/* free the old properties since we want to replace them now */
					if (pchan->prop) {
						IDP_FreeProperty(pchan->prop);
						MEM_freeN(pchan->prop);
						pchan->prop= NULL;
					}
					
					/* now copy over the new copy of the properties */
					pchan->prop= IDP_CopyProperty(chan->prop);	
				}
				
				/* keyframing tagging */
				if (autokeyframe_cfra_can_key(scene, &ob->id)) {
					ListBase dsources = {NULL, NULL};
					KeyingSet *ks = NULL;
					
					/* get KeyingSet to use 
					 *	- use the active KeyingSet if defined (and user wants to use it for all autokeying), 
					 * 	  or otherwise key transforms only
					 */
					if (IS_AUTOKEY_FLAG(ONLYKEYINGSET) && (scene->active_keyingset))
						ks = ANIM_scene_get_active_keyingset(scene);
					else 
						ks = ANIM_builtin_keyingset_get_named(NULL, "LocRotScale");
					
					/* now insert the keyframe(s) using the Keying Set
					 *	1) add datasource override for the PoseChannel
					 *	2) insert keyframes
					 *	3) free the extra info 
					 */
					ANIM_relative_keyingset_add_source(&dsources, &ob->id, &RNA_PoseBone, pchan); 
					ANIM_apply_keyingset(C, &dsources, NULL, ks, MODIFYKEY_MODE_INSERT, (float)CFRA);
					BLI_freelistN(&dsources);
					
					/* clear any unkeyed tags */
					if (chan->bone)
						chan->bone->flag &= ~BONE_UNKEYED;
				}
				else {
					/* add unkeyed tags */
					if (chan->bone)
						chan->bone->flag |= BONE_UNKEYED;
				}
			}
		}
	}
	
	/* Update event for pose and deformation children */
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
		
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);

	return OPERATOR_FINISHED;
}

void POSE_OT_paste (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Paste Pose";
	ot->idname= "POSE_OT_paste";
	ot->description= "Pastes the stored pose on to the current pose";
	
	/* api callbacks */
	ot->exec= pose_paste_exec;
	ot->poll= ED_operator_posemode;
	
	/* flag */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean(ot->srna, "flipped", 0, "Flipped on X-Axis", "");
}

/* ********************************************** */


static int pose_group_add_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
		
	/* only continue if there's an object */
	if (ob == NULL)
		return OPERATOR_CANCELLED;
	
	/* for now, just call the API function for this */
	pose_add_group(ob);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_group_add (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Add Bone Group";
	ot->idname= "POSE_OT_group_add";
	ot->description= "Add a new bone group";
	
	/* api callbacks */
	ot->exec= pose_group_add_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}


static int pose_group_remove_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object */
	if (ob == NULL)
		return OPERATOR_CANCELLED;
	
	/* for now, just call the API function for this */
	pose_remove_group(ob);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_group_remove (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Remove Bone Group";
	ot->idname= "POSE_OT_group_remove";
	ot->description= "Removes the active bone group";
	
	/* api callbacks */
	ot->exec= pose_group_remove_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ------------ */

/* invoke callback which presents a list of bone-groups for the user to choose from */
static int pose_groups_menu_invoke (bContext *C, wmOperator *op, wmEvent *evt)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	bPose *pose;
	
	uiPopupMenu *pup;
	uiLayout *layout;
	bActionGroup *grp;
	int i;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object, and a pose there too */
	if (ELEM(NULL, ob, ob->pose)) 
		return OPERATOR_CANCELLED;
	pose= ob->pose;
	
	/* if there's no active group (or active is invalid), create a new menu to find it */
	if (pose->active_group <= 0) {
		/* create a new menu, and start populating it with group names */
		pup= uiPupMenuBegin(C, op->type->name, 0);
		layout= uiPupMenuLayout(pup);
		
		/* special entry - allow to create new group, then use that 
		 *	(not to be used for removing though)
		 */
		if (strstr(op->idname, "assign")) {
			uiItemIntO(layout, "New Group", 0, op->idname, "type", 0);
			uiItemS(layout);
		}
		
		/* add entries for each group */
		for (grp= pose->agroups.first, i=1; grp; grp=grp->next, i++)
			uiItemIntO(layout, grp->name, 0, op->idname, "type", i);
			
		/* finish building the menu, and process it (should result in calling self again) */
		uiPupMenuEnd(C, pup);
		
		return OPERATOR_CANCELLED;
	}
	else {
		/* just use the active group index, and call the exec callback for the calling operator */
		RNA_int_set(op->ptr, "type", pose->active_group);
		return op->type->exec(C, op);
	}
}

/* Assign selected pchans to the bone group that the user selects */
static int pose_group_assign_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	bArmature *arm;
	bPose *pose;
	short done= 0;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object, and a pose there too */
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	arm= ob->data;
	pose= ob->pose;
	
	/* set the active group number to the one from operator props 
	 * 	- if 0 after this, make a new group...
	 */
	pose->active_group= RNA_int_get(op->ptr, "type");
	if (pose->active_group == 0)
		pose_add_group(ob);
	
	/* add selected bones to group then */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones)
	{
		pchan->agrp_index= pose->active_group;
		done= 1;
	}
	CTX_DATA_END;

	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	/* report done status */
	if (done)
		return OPERATOR_FINISHED;
	else
		return OPERATOR_CANCELLED;
}

void POSE_OT_group_assign (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Add Selected to Bone Group";
	ot->idname= "POSE_OT_group_assign";
	ot->description= "Add selected bones to the chosen bone group";
	
	/* api callbacks */
	ot->invoke= pose_groups_menu_invoke;
	ot->exec= pose_group_assign_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_int(ot->srna, "type", 0, 0, 10, "Bone Group Index", "", 0, INT_MAX);
}


static int pose_group_unassign_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	bArmature *arm;
	bPose *pose;
	short done= 0;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object, and a pose there too */
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	pose= ob->pose;
	arm= ob->data;
	
	/* find selected bones to remove from all bone groups */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones)
	{
		if (pchan->agrp_index) {
			pchan->agrp_index= 0;
			done= 1;
		}
	}
	CTX_DATA_END;
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	/* report done status */
	if (done)
		return OPERATOR_FINISHED;
	else
		return OPERATOR_CANCELLED;
}

void POSE_OT_group_unassign (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Remove Selected from Bone Groups";
	ot->idname= "POSE_OT_group_unassign";
	ot->description= "Remove selected bones from all bone groups";
	
	/* api callbacks */
	ot->exec= pose_group_unassign_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}

static void pose_group_select(bContext *C, Object *ob, int select)
{
	bPose *pose= ob->pose;
	
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, visible_pose_bones)
	{
		if ((pchan->bone->flag & BONE_UNSELECTABLE)==0) {
			if (select) {
				if (pchan->agrp_index == pose->active_group) 
					pchan->bone->flag |= BONE_SELECTED;
			}
			else {
				if (pchan->agrp_index == pose->active_group) 
					pchan->bone->flag &= ~BONE_SELECTED;
			}
		}
	}
	CTX_DATA_END;
}

static int pose_group_select_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object, and a pose there too */
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	
	pose_group_select(C, ob, 1);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_group_select (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Select Bones of Bone Group";
	ot->idname= "POSE_OT_group_select";
	ot->description= "Select bones in active Bone Group";
	
	/* api callbacks */
	ot->exec= pose_group_select_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}

static int pose_group_deselect_exec (bContext *C, wmOperator *op)
{
	ScrArea *sa= CTX_wm_area(C);
	Object *ob;
	
	/* since this call may also be used from the buttons window, we need to check for where to get the object */
	if (sa->spacetype == SPACE_BUTS) 
		ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
	else
		ob= CTX_data_active_object(C);
	
	/* only continue if there's an object, and a pose there too */
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	
	pose_group_select(C, ob, 0);
	
	/* notifiers for updates */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_group_deselect (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Deselecte Bone Group";
	ot->idname= "POSE_OT_group_deselect";
	ot->description= "Deselect bones of active Bone Group";
	
	/* api callbacks */
	ot->exec= pose_group_deselect_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag = OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ********************************************** */

static int pose_flip_names_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm;
	
	/* paranoia checks */
	if (ELEM(NULL, ob, ob->pose)) 
		return OPERATOR_CANCELLED;
	arm= ob->data;
	
	/* loop through selected bones, auto-naming them */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones)
	{
		char newname[32];
		flip_side_name(newname, pchan->name, TRUE);
		ED_armature_bone_rename(arm, pchan->name, newname);
	}
	CTX_DATA_END;
	
	/* since we renamed stuff... */
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);

	/* note, notifier might evolve */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_flip_names (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Flip Names";
	ot->idname= "POSE_OT_flip_names";
	ot->description= "Flips (and corrects) the names of selected bones";
	
	/* api callbacks */
	ot->exec= pose_flip_names_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ------------------ */

static int pose_autoside_names_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm;
	char newname[32];
	short axis= RNA_enum_get(op->ptr, "axis");
	
	/* paranoia checks */
	if (ELEM(NULL, ob, ob->pose)) 
		return OPERATOR_CANCELLED;
	arm= ob->data;
	
	/* loop through selected bones, auto-naming them */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones)
	{
		BLI_strncpy(newname, pchan->name, sizeof(newname));
		if(bone_autoside_name(newname, 1, axis, pchan->bone->head[axis], pchan->bone->tail[axis]))
			ED_armature_bone_rename(arm, pchan->name, newname);
	}
	CTX_DATA_END;
	
	/* since we renamed stuff... */
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);

	/* note, notifier might evolve */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_autoside_names (wmOperatorType *ot)
{
	static EnumPropertyItem axis_items[]= {
		 {0, "XAXIS", 0, "X-Axis", "Left/Right"},
		{1, "YAXIS", 0, "Y-Axis", "Front/Back"},
		{2, "ZAXIS", 0, "Z-Axis", "Top/Bottom"},
		{0, NULL, 0, NULL, NULL}};
	
	/* identifiers */
	ot->name= "AutoName by Axis";
	ot->idname= "POSE_OT_autoside_names";
	ot->description= "Automatically renames the selected bones according to which side of the target axis they fall on";
	
	/* api callbacks */
	ot->invoke= WM_menu_invoke;
	ot->exec= pose_autoside_names_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* settings */
	ot->prop= RNA_def_enum(ot->srna, "axis", axis_items, 0, "Axis", "Axis tag names with.");
}

/* ********************************************** */

/* context active object, or weightpainted object with armature in posemode */
void pose_activate_flipped_bone(Scene *scene)
{
	Object *ob= OBACT;
	bArmature *arm= ob->data;
	
	if(ob==NULL) return;

	if(ob->mode & OB_MODE_WEIGHT_PAINT) {
		ob= modifiers_isDeformedByArmature(ob);
	}
	if(ob && (ob->mode & OB_MODE_POSE)) {
		bPoseChannel *pchanf;
		
		if(arm->act_bone) {
			char name[32];
			flip_side_name(name, arm->act_bone->name, TRUE);

			pchanf= get_pose_channel(ob->pose, name);
			if(pchanf && pchanf->bone != arm->act_bone) {
				arm->act_bone->flag &= ~BONE_SELECTED;
				pchanf->bone->flag |= BONE_SELECTED;

				arm->act_bone= pchanf->bone;

				/* in weightpaint we select the associated vertex group too */
				if(ob->mode & OB_MODE_WEIGHT_PAINT) {
					ED_vgroup_select_by_name(OBACT, name);
					DAG_id_flush_update(&OBACT->id, OB_RECALC_DATA);
				}
				
				// XXX notifiers need to be sent to other editors to update
				
			}			
		}
	}
}


/* ********************************************** */

/* Present a popup to get the layers that should be used */
static int pose_armature_layers_invoke (bContext *C, wmOperator *op, wmEvent *evt)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm= (ob)? ob->data : NULL;
	PointerRNA ptr;
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* sanity checking */
	if (arm == NULL)
		return OPERATOR_CANCELLED;
		
	/* get RNA pointer to armature data to use that to retrieve the layers as ints to init the operator */
	RNA_id_pointer_create((ID *)arm, &ptr);
	RNA_boolean_get_array(&ptr, "layer", layers);
	RNA_boolean_set_array(op->ptr, "layers", layers);
	
	/* part to sync with other similar operators... */
	return WM_operator_props_popup(C, op, evt);
}

/* Set the visible layers for the active armature (edit and pose modes) */
static int pose_armature_layers_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm= (ob)? ob->data : NULL;
	PointerRNA ptr;
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* get the values set in the operator properties */
	RNA_boolean_get_array(op->ptr, "layers", layers);
	
	/* get pointer for armature, and write data there... */
	RNA_id_pointer_create((ID *)arm, &ptr);
	RNA_boolean_set_array(&ptr, "layer", layers);
	
	/* note, notifier might evolve */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}


void POSE_OT_armature_layers (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Change Armature Layers";
	ot->idname= "POSE_OT_armature_layers";
	ot->description= "Change the visible armature layers";
	
	/* callbacks */
	ot->invoke= pose_armature_layers_invoke;
	ot->exec= pose_armature_layers_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean_layer_member(ot->srna, "layers", 32, NULL, "Layer", "Armature layers to make visible");
}

void ARMATURE_OT_armature_layers (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Change Armature Layers";
	ot->idname= "ARMATURE_OT_armature_layers";
	ot->description= "Change the visible armature layers";
	
	/* callbacks */
	ot->invoke= pose_armature_layers_invoke;
	ot->exec= pose_armature_layers_exec;
	ot->poll= ED_operator_editarmature;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean_layer_member(ot->srna, "layers", 32, NULL, "Layer", "Armature layers to make visible");
}

/* ------------------- */

/* Present a popup to get the layers that should be used */
static int pose_bone_layers_invoke (bContext *C, wmOperator *op, wmEvent *evt)
{
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* get layers that are active already */
	memset(&layers, 0, sizeof(layers)); /* set all layers to be off by default */
	
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, selected_pose_bones) 
	{
		short bit;
		
		/* loop over the bits for this pchan's layers, adding layers where they're needed */
		for (bit= 0; bit < 32; bit++) {
			if (pchan->bone->layer & (1<<bit))
				layers[bit]= 1;
		}
	}
	CTX_DATA_END;
	
	/* copy layers to operator */
	RNA_boolean_set_array(op->ptr, "layers", layers);
	
		/* part to sync with other similar operators... */
	return WM_operator_props_popup(C, op, evt);
}

/* Set the visible layers for the active armature (edit and pose modes) */
static int pose_bone_layers_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_active_object(C);
	bArmature *arm= (ob)? ob->data : NULL;
	PointerRNA ptr;
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* get the values set in the operator properties */
	RNA_boolean_get_array(op->ptr, "layers", layers);
	
	/* set layers of pchans based on the values set in the operator props */
	CTX_DATA_BEGIN(C, bPoseChannel *, pchan, selected_pose_bones) 
	{
		/* get pointer for pchan, and write flags this way */
		RNA_pointer_create((ID *)arm, &RNA_Bone, pchan->bone, &ptr);
		RNA_boolean_set_array(&ptr, "layer", layers);
	}
	CTX_DATA_END;
	
	/* note, notifier might evolve */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_bone_layers (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Change Bone Layers";
	ot->idname= "POSE_OT_bone_layers";
	ot->description= "Change the layers that the selected bones belong to";
	
	/* callbacks */
	ot->invoke= pose_bone_layers_invoke;
	ot->exec= pose_bone_layers_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean_layer_member(ot->srna, "layers", 32, NULL, "Layer", "Armature layers that bone belongs to");
}

/* ------------------- */

/* Present a popup to get the layers that should be used */
static int armature_bone_layers_invoke (bContext *C, wmOperator *op, wmEvent *evt)
{
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* get layers that are active already */
	memset(&layers, 0, sizeof(layers)); /* set all layers to be off by default */
	
	CTX_DATA_BEGIN(C, EditBone *, ebone, selected_editable_bones) 
	{
		short bit;
		
		/* loop over the bits for this pchan's layers, adding layers where they're needed */
		for (bit= 0; bit < 32; bit++) {
			if (ebone->layer & (1<<bit))
				layers[bit]= 1;
		}
	}
	CTX_DATA_END;
	
	/* copy layers to operator */
	RNA_boolean_set_array(op->ptr, "layers", layers);
	
		/* part to sync with other similar operators... */
	return WM_operator_props_popup(C, op, evt);
}

/* Set the visible layers for the active armature (edit and pose modes) */
static int armature_bone_layers_exec (bContext *C, wmOperator *op)
{
	Object *ob= CTX_data_edit_object(C);
	bArmature *arm= (ob)? ob->data : NULL;
	PointerRNA ptr;
	int layers[32]; /* hardcoded for now - we can only have 32 armature layers, so this should be fine... */
	
	/* get the values set in the operator properties */
	RNA_boolean_get_array(op->ptr, "layers", layers);
	
	/* set layers of pchans based on the values set in the operator props */
	CTX_DATA_BEGIN(C, EditBone *, ebone, selected_editable_bones) 
	{
		/* get pointer for pchan, and write flags this way */
		RNA_pointer_create((ID *)arm, &RNA_EditBone, ebone, &ptr);
		RNA_boolean_set_array(&ptr, "layer", layers);
	}
	CTX_DATA_END;
	
	/* note, notifier might evolve */
	WM_event_add_notifier(C, NC_OBJECT|ND_POSE, ob);
	
	return OPERATOR_FINISHED;
}

void ARMATURE_OT_bone_layers (wmOperatorType *ot)
{
	/* identifiers */
	ot->name= "Change Bone Layers";
	ot->idname= "ARMATURE_OT_bone_layers";
	ot->description= "Change the layers that the selected bones belong to";
	
	/* callbacks */
	ot->invoke= armature_bone_layers_invoke;
	ot->exec= armature_bone_layers_exec;
	ot->poll= ED_operator_editarmature;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
	
	/* properties */
	RNA_def_boolean_layer_member(ot->srna, "layers", 32, NULL, "Layer", "Armature layers that bone belongs to");
}

/* ********************************************** */

static int pose_flip_quats_exec (bContext *C, wmOperator *op)
{
	Scene *scene= CTX_data_scene(C);
	Object *ob= CTX_data_active_object(C);
	KeyingSet *ks = ANIM_builtin_keyingset_get_named(NULL, "LocRotScale");
	
	/* loop through all selected pchans, flipping and keying (as needed) */
	CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pose_bones)
	{
		/* only if bone is using quaternion rotation */
		if (pchan->rotmode == ROT_MODE_QUAT) {
			/* quaternions have 720 degree range */
			pchan->quat[0]= -pchan->quat[0];
			pchan->quat[1]= -pchan->quat[1];
			pchan->quat[2]= -pchan->quat[2];
			pchan->quat[3]= -pchan->quat[3];
			
			/* tagging */
			if (autokeyframe_cfra_can_key(scene, &ob->id)) {
				ListBase dsources = {NULL, NULL};
				
				/* now insert the keyframe(s) using the Keying Set
				 *	1) add datasource override for the PoseChannel
				 *	2) insert keyframes
				 *	3) free the extra info 
				 */
				ANIM_relative_keyingset_add_source(&dsources, &ob->id, &RNA_PoseBone, pchan); 
				ANIM_apply_keyingset(C, &dsources, NULL, ks, MODIFYKEY_MODE_INSERT, (float)CFRA);
				BLI_freelistN(&dsources);
				
				/* clear any unkeyed tags */
				if (pchan->bone)
					pchan->bone->flag &= ~BONE_UNKEYED;
			}
			else {
				/* add unkeyed tags */
				if (pchan->bone)
					pchan->bone->flag |= BONE_UNKEYED;
			}
		}
	}
	CTX_DATA_END;
	
	/* notifiers and updates */
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
	WM_event_add_notifier(C, NC_OBJECT|ND_TRANSFORM, ob);
	
	return OPERATOR_FINISHED;
}

void POSE_OT_quaternions_flip (wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Flip Quats";
	ot->idname= "POSE_OT_quaternions_flip";
	ot->description= "Flip quaternion values to achieve desired rotations, while maintaining the same orientations";
	
	/* callbacks */
	ot->exec= pose_flip_quats_exec;
	ot->poll= ED_operator_posemode;
	
	/* flags */
	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}

/* ********************************************** */

/* context: active channel */
void pose_special_editmenu(Scene *scene)
{
#if 0
	Object *obedit= scene->obedit; // XXX context
	Object *ob= OBACT;
	short nr;
	
	/* paranoia checks */
	if(!ob && !ob->pose) return;
	if(ob==obedit || (ob->mode & OB_MODE_POSE)==0) return;
	
	nr= pupmenu("Specials%t|Select Constraint Target%x1|Flip Left-Right Names%x2|Calculate Paths%x3|Clear Paths%x4|Clear User Transform %x5|Relax Pose %x6|%l|AutoName Left-Right%x7|AutoName Front-Back%x8|AutoName Top-Bottom%x9");
	if(nr==1) {
		pose_select_constraint_target(scene);
	}
	else if(nr==2) {
		pose_flip_names();
	}
	else if(nr==3) {
		pose_calculate_path(C, ob);
	}
	else if(nr==4) {
		pose_clear_paths(ob);
	}
	else if(nr==5) {
		pose_clear_user_transforms(scene, ob);
	}
	else if(nr==6) {
		pose_relax();
	}
	else if(ELEM3(nr, 7, 8, 9)) {
		pose_autoside_names(nr-7);
	}
#endif
}

/* Restore selected pose-bones to 'action'-defined pose */
void pose_clear_user_transforms(Scene *scene, Object *ob)
{
	bArmature *arm= ob->data;
	bPoseChannel *pchan;
	
	if (ob->pose == NULL)
		return;
	
	/* if the object has an action, restore pose to the pose defined by the action by clearing pose on selected bones */
	if (ob->action) {
		/* find selected bones */
		for (pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
			if (pchan->bone && (pchan->bone->flag & BONE_SELECTED) && (pchan->bone->layer & arm->layer)) {
				/* just clear the BONE_UNKEYED flag, allowing this bone to get overwritten by actions again */
				pchan->bone->flag &= ~BONE_UNKEYED;
			}
		}
		
		/* clear pose locking flag 
		 *	- this will only clear the user-defined pose in the selected bones, where BONE_UNKEYED has been cleared
		 */
		ob->pose->flag |= POSE_DO_UNLOCK;
	}
	else {
		/* no action, so restore entire pose to rest pose (cannot restore only selected bones) */
		rest_pose(ob->pose);
	}
	
	DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
	BIF_undo_push("Clear User Transform");
}