import common = require("./html-view-common");

import definition = require("ui/html-view");

import dependencyObservable = require("ui/core/dependency-observable");

import proxy = require("ui/core/proxy");

import * as utils from "utils/utils";

import * as view from "ui/core/view";

function onHtmlPropertyChanged(data: dependencyObservable.PropertyChangeData) {

var view = <HtmlView>data.object;

if (!view.ios) {

return;

}

var types = require("utils/types");

if (types.isString(data.newValue)) {

var htmlString = NSString.stringWithString(data.newValue);

var nsData = htmlString.dataUsingEncoding(NSUnicodeStringEncoding);

view.ios.attributedText = NSAttributedString.alloc().initWithDataOptionsDocumentAttributesError(nsData, <any>{ [NSDocumentTypeDocumentAttribute]: NSHTMLTextDocumentType }, null);

} else {

view.ios.attributedText = NSAttributedString.new();

}

}

// register the setNativeValue callback

(<proxy.PropertyMetadata>common.HtmlView.htmlProperty.metadata).onSetNativeValue = onHtmlPropertyChanged;

global.moduleMerge(common, exports);

export class HtmlView extends common.HtmlView {

private _ios: UITextView;

constructor(options?: definition.Options) {

super(options);

this._ios = UITextView.new();

this._ios.scrollEnabled = false;

this._ios.editable = false;

this._ios.selectable = true;

this._ios.userInteractionEnabled = true;

this._ios.dataDetectorTypes = UIDataDetectorTypes.UIDataDetectorTypeAll;

}

get ios(): UITextView {

return this._ios;

}

get _nativeView(): UITextView {

return this._ios;

}

public onMeasure(widthMeasureSpec: number, heightMeasureSpec: number): void {

var nativeView = this._nativeView;

if (nativeView) {

var width = utils.layout.getMeasureSpecSize(widthMeasureSpec);

var widthMode = utils.layout.getMeasureSpecMode(widthMeasureSpec);

var height = utils.layout.getMeasureSpecSize(heightMeasureSpec);

var heightMode = utils.layout.getMeasureSpecMode(heightMeasureSpec);

if (widthMode === utils.layout.UNSPECIFIED) {

width = Number.POSITIVE_INFINITY;

}

if (heightMode === utils.layout.UNSPECIFIED) {

height = Number.POSITIVE_INFINITY;

}

var nativeSize = nativeView.sizeThatFits(CGSizeMake(width, height));

var labelWidth = nativeSize.width;

labelWidth = Math.min(labelWidth, width);

var measureWidth = Math.max(labelWidth, this.minWidth);

var measureHeight = Math.max(nativeSize.height, this.minHeight);

var widthAndState = view.View.resolveSizeAndState(measureWidth, width, widthMode, 0);

var heightAndState = view.View.resolveSizeAndState(measureHeight, height, heightMode, 0);

this.setMeasuredDimension(widthAndState, heightAndState);

}

}

}