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/* 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.widget
import android.annotation.SuppressLint
import android.content.Context
import android.net.Uri
import android.preference.PreferenceScreen
import androidx.preference.PreferenceViewHolder
import androidx.preference.SwitchPreferenceCompat
import android.text.Spannable
import android.text.SpannableString
import android.text.TextPaint
import android.text.method.LinkMovementMethod
import android.text.style.ClickableSpan
import android.util.AttributeSet
import android.view.View
import android.widget.TextView
import org.mozilla.focus.R
import org.mozilla.focus.browser.Browser
/**
* This class allows us to set a clickable link within a [PreferenceScreen] summary.
*/
class TelemetrySwitchPreference(context: Context, attrs: AttributeSet)
: SwitchPreferenceCompat(context, attrs) {
override fun onBindViewHolder(holder: PreferenceViewHolder?) {
super.onBindViewHolder(holder)
(holder?.findViewById(android.R.id.summary) as TextView).apply {
text = getTextSpan()
visibility = View.VISIBLE
}.let { summaryTv ->
summaryTv.linksClickable = true
summaryTv.movementMethod = LinkMovementMethod.getInstance()
}
}
private fun getTextSpan(): Spannable {
val (text, linkStart, linkEnd) = getSummaryText()
val span = SpannableString(text)
// Set text clicks to toggle button state
span.setSpan(mainTextSpan(), 0, linkStart, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
// Set link clicks to open the URL
span.setSpan(linkTextSpan(), linkStart, linkEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
// Set the trailing space to toggle button state. If we don't do this,
// any trailing empty space after the text will open our link on click
span.setSpan(mainTextSpan(), linkEnd, linkEnd + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
return span
}
private data class SummaryText(val text: String, val linkIndex: Int, val endLinkIndex: Int)
/**
* At this time, we only need this behavior for one specific view, so
* generalizing the text would add unnecessary complexity. If this changes
* in the future this class can be updated
*/
private fun getSummaryText(): SummaryText {
val summary = context.getString(R.string.preference_mozilla_telemetry_summary2,
context.getString(R.string.app_name_extended_show))
val learnMore = context.getString(R.string.preference_mozilla_telemetry_summary)
val fullText = "$summary $learnMore "
val learnMoreIndex = fullText.indexOf(learnMore)
return SummaryText(fullText, learnMoreIndex, learnMoreIndex + learnMore.length)
}
private fun linkTextSpan(): ClickableSpan = object : ClickableSpan() {
override fun onClick(widget: View?) {
val intent = Browser.getIntent(context,
context.startActivity(intent)
}
}
@SuppressLint("RestrictedApi")
private fun mainTextSpan(): ClickableSpan = object : ClickableSpan() {
override fun onClick(widget: View?) {
performClick()
}
// This span should not be styled as a link
override fun updateDrawState(ds: TextPaint?) {}
}
}