/* Translate the following to your language: */
if (!mw.messages.exists( 've-SearchAndReplaceDialog-title' )) {
	mw.messages.set({
		've-SearchAndReplaceDialog-title': 'Search',
		've-SearchAndReplaceDialog-from-label': 'From:',
		've-SearchAndReplaceDialog-to-label': 'To:',
		've-SearchAndReplaceDialog-from-placeholder': 'From text',
		've-SearchAndReplaceDialog-to-placeholder': 'To text',
		've-SearchAndReplaceDialog-replaceAll': 'Repalce all',
		've-SearchAndReplaceDialog-replace': 'Repalce',
		've-SearchAndReplaceDialog-matchcase': 'Match case',
		've-SearchAndReplaceDialog-replace-complete': 'Found and replaced $1 occurrences',
		've-ReplaceTool-ToolbarButton': 'Replace'
	});
}
/* end of translations */

/*!
 * VisualEditor replace gadget
 *
 * @copyright [[User:ערן|Eranroz]] and [[User:Ravid ziv|Ravid ziv]]
 * @license The MIT License (MIT)
 */
function extractText(){
	var nodes = [];
	var model = ve.init.target.getSurface().getModel();
	function getTextNodes( obj ) {
		var i;
		
		for ( i = 0; i < obj.children.length; i++ ) {
			if ( obj.children[i].type == 'text'){
				nodes.push(obj.children[i]);
			}

			if ( obj.children[i].children ) {
				getTextNodes( obj.children[i] );
			}
		}
	}
	getTextNodes(ve.init.target.getSurface().getModel().getDocument().getDocumentNode());
	return nodes;
}

function searchAndReplace( fromText, toText, replaceAll, matchCase ) {
	var textNodes = extractText();
	var model = ve.init.target.getSurface().getModel();
	var firstIndex = 0;
	var numReplacements = 0;
	for (var nodeI = 0; nodeI < textNodes.length; nodeI++) {
		var node = textNodes[nodeI];
		var nodeRange = node.getRange();
		var nodeText = model.getLinearFragment(nodeRange).getText();

		var fromIndex = matchCase? nodeText.toUpperCase().indexOf( fromText.toUpperCase(), firstIndex ) : nodeText.indexOf( fromText, firstIndex );
		if ( fromIndex == -1 ) {
			firstIndex = 0;
			continue;
		}
		var start = nodeRange.from+fromIndex;
		var end = start+fromText.length;
		if (!replaceAll && model.selection.start > start) {
			continue;//skip replacements before selection
		}
		var removeRange = new ve.Range( start, end );
		var transaction = ve.dm.Transaction.newFromReplacement(
			ve.init.target.getSurface().getView().getDocument().model, 
			removeRange, 
			toText
		);
		var newSelection = new ve.Range(0,0);
		if (!replaceAll) {
			newSelection = new ve.Range( start, start+toText.length );
		}
		ve.init.target.getSurface().getView().changeModel(transaction, newSelection);
		numReplacements++;
		if (!replaceAll) {
			break;
		}
		firstIndex = fromIndex + toText.length;
		nodeI = nodeI -1;
	}
	if (numReplacements==0 || replaceAll) {
		mw.notify( mw.msg( 've-SearchAndReplaceDialog-replace-complete', numReplacements ) );
	}
}

ve.ui.SearchAndReplaceDialog = function( manager, config ) {
	// Parent constructor
	ve.ui.SearchAndReplaceDialog.super.call( this, manager, config );

};
/* Inheritance */

OO.inheritClass( ve.ui.SearchAndReplaceDialog, ve.ui.FragmentDialog );

ve.ui.SearchAndReplaceDialog.prototype.getActionProcess  = function ( action ) {
	var fromVal = this.fromInput.getValue(),
		toVal = this.toInput.getValue(),
		matchCase = this.matchCaseCheckbox.getValue();

	if ( action === 'replace' ) {
		return new OO.ui.Process( function () {
			searchAndReplace( fromVal, toVal, false, matchCase );
		}, this );
	} else if ( action === 'replace-all' ) {
		return new OO.ui.Process( function () {
			searchAndReplace( fromVal, toVal, true, matchCase );
			this.close( );
		}, this );
	}
	return ve.ui.MWMediaDialog.super.prototype.getActionProcess.call( this, action );
}

ve.ui.SearchAndReplaceDialog.prototype.getBodyHeight = function () {
	return 200;
};

/* Static Properties */
ve.ui.SearchAndReplaceDialog.static.name = 'search';
ve.ui.SearchAndReplaceDialog.static.title = mw.msg( 've-SearchAndReplaceDialog-title' );
ve.ui.SearchAndReplaceDialog.static.size = 'medium';

ve.ui.SearchAndReplaceDialog.static.actions = [
	{
		'action': 'replace',
		'label': mw.msg( 've-SearchAndReplaceDialog-replace' ),
		'flags': [ 'constructive' ],
		'modes': 'insert'
	},
	{
		'label': OO.ui.deferMsg( 'visualeditor-dialog-action-cancel' ),
		'flags': 'safe',
		'modes': [ 'edit', 'insert', 'select' ]
	},
	{
		'action': 'replace-all',
		'label': mw.msg( 've-SearchAndReplaceDialog-replaceAll' ),
		'flags': [ 'constructive' ],
		'modes': 'insert'
	}
];

ve.ui.SearchAndReplaceDialog.prototype.initialize = function () {
	ve.ui.SearchAndReplaceDialog.super.prototype.initialize.call( this );
	this.panel = new OO.ui.PanelLayout( { '$': this.$, 'scrollable': true, 'padded': true } );
	this.inputsFieldset = new OO.ui.FieldsetLayout( {
		'$': this.$
	} );
	// input from
	this.fromInput = new OO.ui.TextInputWidget(
		{ '$': this.$, 'multiline': false, 'placeholder': mw.msg( 've-SearchAndReplaceDialog-from-placeholder' ) }
	);
	//input to
	this.toInput = new OO.ui.TextInputWidget(
		{ '$': this.$, 'multiline': false, 'placeholder': mw.msg( 've-SearchAndReplaceDialog-to-placeholder' ) }
	);
	this.fromField = new OO.ui.FieldLayout( this.fromInput, {
		'$': this.$,
		'label': mw.msg( 've-SearchAndReplaceDialog-from-label' )
	} );
	this.toField = new OO.ui.FieldLayout( this.toInput, {
		'$': this.$,
		'label': mw.msg( 've-SearchAndReplaceDialog-to-label' )
	} );


	this.matchCaseCheckbox = new OO.ui.CheckboxInputWidget( {
		'$': this.$
	} );
	var matchCaseField = new OO.ui.FieldLayout( this.matchCaseCheckbox, {
		'$': this.$,
		'align': 'inline',
		'label': mw.msg( 've-SearchAndReplaceDialog-matchcase' )
	} );

	this.inputsFieldset.$element.append(
		this.fromField.$element,
		this.toField.$element,
		matchCaseField.$element
	);
	this.panel.$element.append(	this.inputsFieldset.$element );
	this.$body.append( this.panel.$element );

}

ve.ui.windowFactory.register( ve.ui.SearchAndReplaceDialog );

//---------- replace tool ------------------
 
function ReplaceTool( toolGroup, config ) {
	OO.ui.Tool.call( this, toolGroup, config );
 
}
OO.inheritClass( ReplaceTool, OO.ui.Tool );
 
ReplaceTool.static.name = 'ReplaceTool';
ReplaceTool.static.title = mw.msg('ve-ReplaceTool-ToolbarButton');
 
ReplaceTool.prototype.onSelect = function () {
	this.toolbar.getSurface().execute( 'window', 'open', 'search', null );
};
 
ReplaceTool.prototype.onUpdateState = function () {
	this.setActive( false );
};
 
ve.ui.toolFactory.register( ReplaceTool );