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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
package org.mozilla.focus.iwebview
import android.annotation.SuppressLint
import android.content.Context
import android.util.AttributeSet
import android.view.View
import android.webkit.CookieManager
import android.webkit.WebSettings
import android.webkit.WebStorage
import android.webkit.WebView.setWebContentsDebuggingEnabled
import android.webkit.WebViewDatabase
import org.mozilla.focus.R
import org.mozilla.focus.browser.UserAgent
import org.mozilla.focus.webview.FirefoxWebChromeClient
import org.mozilla.focus.webview.FirefoxWebView
import org.mozilla.focus.webview.FocusWebViewClient
import org.mozilla.focus.webview.TrackingProtectionWebViewClient
import org.mozilla.telemetry.BuildConfig
/** Creates a WebView-based IWebView implementation. */
object WebViewProvider {
/**
* Preload webview data. This allows the webview implementation to load resources and other data
* it might need, in advance of intialising the view (at which time we are probably wanting to
* show a website immediately).
*/
@JvmStatic
fun preload(context: Context) {
TrackingProtectionWebViewClient.triggerPreload(context)
}
@JvmStatic
fun create(context: Context, attrs: AttributeSet): View {
val client = FocusWebViewClient(context.applicationContext)
val chromeClient = FirefoxWebChromeClient()
return FirefoxWebView(context, attrs, client, chromeClient).apply {
setWebViewClient(client)
setWebChromeClient(chromeClient)
initWebview(this)
initWebSettings(context, settings)
}
}
@Suppress("DEPRECATION") // To be safe, we'll use delete methods as long as they're there.
fun deleteGlobalData(context: Context) {
// We don't care about the callback - we just want to make sure cookies are gone
CookieManager.getInstance().removeAllCookies(null)
WebStorage.getInstance().deleteAllData()
val webViewDatabase = WebViewDatabase.getInstance(context)
webViewDatabase.clearFormData() // Unclear how this differs from WebView.clearFormData()
webViewDatabase.clearHttpAuthUsernamePassword()
}
}
private fun initWebview(webView: FirefoxWebView) = with(webView) {
isVerticalScrollBarEnabled = true
isHorizontalScrollBarEnabled = true
val initialZoom = context.resources.getInteger(R.integer.webview_initial_zoom)
setInitialScale(initialZoom)
val minimumFontSize = context.resources.getInteger(R.integer.webview_minimum_font_size)
settings.minimumFontSize = minimumFontSize
if (BuildConfig.DEBUG) {
setWebContentsDebuggingEnabled(true)
}
}
@SuppressLint("SetJavaScriptEnabled") // We explicitly want to enable JavaScript
@Suppress("DEPRECATION") // To be safe, we'll use delete methods as long as they're there.
private fun initWebSettings(context: Context, settings: WebSettings) = with(settings) {
val appName = context.resources.getString(R.string.useragent_appname)
userAgentString = UserAgent.buildUserAgentString(context, settings, appName)
javaScriptEnabled = true
domStorageEnabled = true
// The default for those settings should be "false" - But we want to be explicit.
setAppCacheEnabled(false)
databaseEnabled = false
javaScriptCanOpenWindowsAutomatically = false
saveFormData = false
savePassword = false
setGeolocationEnabled(false) // We do not implement the callbacks
builtInZoomControls = true
displayZoomControls = false // Hide by default
loadWithOverviewMode = true // To respect the html viewport
// Also increase text size to fill the viewport (this mirrors the behaviour of Firefox,
// Chrome does this in the current Chrome Dev, but not Chrome release).
// TODO #33: TEXT_AUTOSIZING does not exist in AmazonWebSettings
// settings.setLayoutAlgorithm(AmazonWebSettings.LayoutAlgorithm.TEXT_AUTOSIZING);
// Consult with product before modifying these: for security reasons, we disable access to
// arbitrary local files by webpages. Note: assets and resources can still be loaded via
allowFileAccess = false
allowFileAccessFromFileURLs = false
allowUniversalAccessFromFileURLs = false
allowContentAccess = false
}