mirror of https://github.com/TeamNewPipe/NewPipe
104 lines
3.9 KiB
Kotlin
104 lines
3.9 KiB
Kotlin
package org.schabi.newpipe.about
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import android.content.Context
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import android.util.Base64
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import android.webkit.WebView
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import androidx.appcompat.app.AlertDialog
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import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
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import io.reactivex.rxjava3.core.Observable
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import io.reactivex.rxjava3.disposables.Disposable
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import io.reactivex.rxjava3.schedulers.Schedulers
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import org.schabi.newpipe.R
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import org.schabi.newpipe.util.Localization
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import org.schabi.newpipe.util.ThemeHelper
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import org.schabi.newpipe.util.external_communication.ShareUtils
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import java.io.IOException
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/**
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* @param context the context to use
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* @param license the license
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* @return String which contains a HTML formatted license page
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* styled according to the context's theme
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*/
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private fun getFormattedLicense(context: Context, license: License): String {
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try {
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return context.assets.open(license.filename).bufferedReader().use { it.readText() }
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// split the HTML file and insert the stylesheet into the HEAD of the file
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.replace("</head>", "<style>${getLicenseStylesheet(context)}</style></head>")
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} catch (e: IOException) {
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throw IllegalArgumentException("Could not get license file: ${license.filename}", e)
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}
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}
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/**
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* @param context the Android context
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* @return String which is a CSS stylesheet according to the context's theme
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*/
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private fun getLicenseStylesheet(context: Context): String {
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val isLightTheme = ThemeHelper.isLightThemeSelected(context)
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val licenseBackgroundColor = getHexRGBColor(
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context, if (isLightTheme) R.color.light_license_background_color else R.color.dark_license_background_color
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)
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val licenseTextColor = getHexRGBColor(
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context, if (isLightTheme) R.color.light_license_text_color else R.color.dark_license_text_color
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)
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val youtubePrimaryColor = getHexRGBColor(
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context, if (isLightTheme) R.color.light_youtube_primary_color else R.color.dark_youtube_primary_color
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)
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return "body{padding:12px 15px;margin:0;background:#$licenseBackgroundColor;color:#$licenseTextColor}" +
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"a[href]{color:#$youtubePrimaryColor}pre{white-space:pre-wrap}"
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}
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/**
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* Cast R.color to a hexadecimal color value.
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*
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* @param context the context to use
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* @param color the color number from R.color
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* @return a six characters long String with hexadecimal RGB values
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*/
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private fun getHexRGBColor(context: Context, color: Int): String {
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return context.getString(color).substring(3)
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}
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fun showLicense(context: Context?, component: SoftwareComponent): Disposable {
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return showLicense(context, component.license) {
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setPositiveButton(R.string.dismiss) { dialog, _ ->
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dialog.dismiss()
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}
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setNeutralButton(R.string.open_website_license) { _, _ ->
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ShareUtils.openUrlInBrowser(context!!, component.link)
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}
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}
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}
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fun showLicense(context: Context?, license: License) = showLicense(context, license) {
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setPositiveButton(R.string.ok) { dialog, _ -> dialog.dismiss() }
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}
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private fun showLicense(
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context: Context?,
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license: License,
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block: AlertDialog.Builder.() -> AlertDialog.Builder
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): Disposable {
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return if (context == null) {
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Disposable.empty()
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} else {
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Observable.fromCallable { getFormattedLicense(context, license) }
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.subscribeOn(Schedulers.io())
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe { formattedLicense ->
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val webViewData =
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Base64.encodeToString(formattedLicense.toByteArray(), Base64.NO_PADDING)
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val webView = WebView(context)
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webView.loadData(webViewData, "text/html; charset=UTF-8", "base64")
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Localization.assureCorrectAppLanguage(context)
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AlertDialog.Builder(context)
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.setTitle(license.name)
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.setView(webView)
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.block()
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.show()
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}
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}
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}
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