// ===========================================================================
// Copyright 2018 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
//  Procedure Name:
//		textureEditorToggleIsolateSelect
//
//  Description:
//		Toggle isolate select for texture editor.
//
global proc textureEditorToggleIsolateSelect(){

	string $originalSelection[] = `ls -sl`;
	float $origPivot[] = uvTkGetUVPivot();

	string $mesh = "";
	if (size($origPivot) == 2)
	{
		// get mesh 
		string $buffer[]; 
		tokenize $originalSelection[0] "." $buffer; 
		$mesh = $buffer[0]; 
		// Set pivot for isolate undo. 
		setAttr ($mesh + ".uvPivot") $origPivot[0] $origPivot[1];
	}

    string $texWinName[] = `getPanel -sty polyTexturePlacementPanel`;
    int $viewState = `optionVar -q textureWindowShaderFacesMode`;
    textureWindowShaderFacesMode( $texWinName[0], "textureWindow", 1 );
    if($viewState == 0 ){ 
        textureEditorIsolateSelect 0;
        textureEditorIsolateSelect 1;
        txtWndUpdateEditor( $texWinName[0], "textureWindow", "null", 101 );
    }

	// We restore original selection here since there is a common selection issue here:
	// Assume we have a DG chain is polySphere1->OpNodeX->pSphreShape1, now we select some components,
	// then setAttr OpNodeX.attrX to trigger a evaluation for meshShape, active group data which stored in
	// meshShape.outPolyGeom will be overrided by meshShape.inPolyGeom. Consider Maya selection implemention
	// now, fixing it essentially will cost much price, so we re-select to hack this isolate bug.
	if (size($originalSelection[0]) > 0) 
		select -r $originalSelection;
	else
		select -clear;

	if (size($origPivot) == 2 && $mesh != "")
	{
		// Set pivot to original, since reselection will change pivot position to center.
		setAttr ($mesh + ".uvPivot") $origPivot[0] $origPivot[1];
	}
}