120 lines
4.3 KiB
C#
120 lines
4.3 KiB
C#
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using ZicMoove.Views;
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using Android.Webkit;
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using Xamarin.Forms.Platform.Android;
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using ZicMoove.Droid;
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using System;
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using Java.Interop;
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using System.ComponentModel;
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using Android.Views;
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[assembly: Xamarin.Forms.ExportRenderer(typeof(MarkdownView), typeof(MarkdownViewRenderer))]
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namespace ZicMoove.Droid
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{
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using Markdown;
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using XLabs.Forms;
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using XLabs.Ioc;
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using XLabs.Platform.Mvvm;
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using static View;
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public class MarkdownViewRenderer : ViewRenderer<MarkdownView, WebView>
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{
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private WebView editorView;
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private MarkdownEditor editorTemplate = new MarkdownEditor();
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const string jsLoadedJavaScriptFunction = "function jsLoaded(){jsBridge.jsLoaded()}";
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const string contentEditedJavaScriptFunction = "function contentEdited(data){jsBridge.contentEdited(data)}";
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public WebView EditorView
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{
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get
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{
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return editorView;
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}
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}
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/// <summary>
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/// To be called once document finished loading
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/// </summary>
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/// <param name="xview"></param>
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/// <param name="view"></param>
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public static async void AdjustHeightRequest(MarkdownView xview, WebView view)
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{
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if (view == null || xview == null) return;
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var vch = view.ContentHeight;
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// var oldH = xview.Height;
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var newH = vch > xview.MinimumHeightRequest ? vch : xview.MinimumHeightRequest;
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xview.HeightRequest = newH;
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}
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protected override void OnElementChanged(ElementChangedEventArgs<MarkdownView> e)
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{
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base.OnElementChanged(e);
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if (Control == null)
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{
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SetNativeControl(CreateNativeControl());
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InjectJS(jsLoadedJavaScriptFunction);
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InjectJS(contentEditedJavaScriptFunction);
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}
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if (e.OldElement != null)
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{
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// Unsubscribe
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}
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if (e.NewElement != null)
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{
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// Subscribe
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editorTemplate.Model = new Markdown.MarkdownViewModel
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{
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Content = e.NewElement.Markdown, Editable = e.NewElement.Editable
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};
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var html = editorTemplate.GenerateString();
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EditorView.LoadDataWithBaseURL("file:///android_asset/",
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html, "text/html", "utf-8", null);
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EditorView.SetBackgroundColor(e.NewElement.BackgroundColor.ToAndroid());
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}
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}
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void InjectJS(string script)
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{
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if (Control != null)
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{
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Control.LoadUrl(string.Format("javascript: {0}", script));
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}
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}
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MDContextMenu contextMenu;
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private WebView CreateNativeControl()
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{
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editorView = new WebView(Context);
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EditorView.SetWebChromeClient(
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new MarkdownWebChromeClient()
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);
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EditorView.Settings.BuiltInZoomControls = false;
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EditorView.Settings.JavaScriptEnabled = true;
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EditorView.Settings.LoadsImagesAutomatically = true;
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EditorView.Settings.SetAppCacheEnabled(true);
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EditorView.Settings.AllowContentAccess = true;
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EditorView.Settings.AllowFileAccess = true;
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EditorView.Settings.AllowFileAccessFromFileURLs = true;
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EditorView.Settings.AllowUniversalAccessFromFileURLs = true;
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EditorView.Settings.BlockNetworkImage = false;
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EditorView.Settings.BlockNetworkLoads = false;
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EditorView.Settings.DomStorageEnabled = true;
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EditorView.AddJavascriptInterface(new JsBridgeMarkdown(this), "jsBridge");
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EditorView.ViewTreeObserver.PreDraw += ViewTreeObserver_PreDraw;
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//var app = Resolver.Resolve<IXFormsApp>() as IXFormsApp<XFormsCompatApplicationDroid>;
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//contextMenu = new MDContextMenu(app.AppContext);
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//EditorView.SetOnCreateContextMenuListener(contextMenu);
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return EditorView;
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}
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private void EditorView_Touch(object sender, TouchEventArgs e)
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{
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}
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private void ViewTreeObserver_PreDraw(object sender, ViewTreeObserver.PreDrawEventArgs e)
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{
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AdjustHeightRequest(Element, Control);
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}
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}
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} |