Twidere-App-Android-Twitter.../twidere/src/main/kotlin/org/mariotaku/twidere/view/TimelineContentTextView.kt

125 lines
4.3 KiB
Kotlin

/*
* Twidere - Twitter client for Android
*
* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mariotaku.twidere.view
import android.annotation.SuppressLint
import android.content.Context
import android.text.Spannable
import android.text.method.BaseMovementMethod
import android.text.method.MovementMethod
import android.text.style.ClickableSpan
import android.util.AttributeSet
import android.view.MotionEvent
import android.widget.TextView
import org.mariotaku.chameleon.view.ChameleonTextView
import org.mariotaku.twidere.extension.setupEmojiFactory
import java.lang.ref.WeakReference
import kotlin.math.roundToInt
/**
* Returns true when not clicking links
* Created by mariotaku on 15/11/20.
*/
class TimelineContentTextView(
context: Context,
attrs: AttributeSet? = null
) : ChameleonTextView(context, attrs) {
init {
setupEmojiFactory()
}
override fun dispatchTouchEvent(event: MotionEvent): Boolean {
// FIXME simple workaround to https://code.google.com/p/android/issues/detail?id=191430
// Android clears TextView when setText(), so setText before touch
if (event.actionMasked == MotionEvent.ACTION_DOWN && isTextSelectable) {
if (selectionEnd != selectionStart) {
val text = text
setText(null)
setText(text)
}
}
return super.dispatchTouchEvent(event)
}
@SuppressLint("ClickableViewAccessibility")
override fun onTouchEvent(event: MotionEvent): Boolean {
if (isTextSelectable) {
return super.onTouchEvent(event)
}
return super.onTouchEvent(event)
}
override fun getDefaultMovementMethod(): MovementMethod {
return InternalMovementMethod()
}
override fun setClickable(clickable: Boolean) {
super.setClickable(clickable && isTextSelectable)
}
override fun setLongClickable(longClickable: Boolean) {
super.setLongClickable(longClickable && isTextSelectable)
}
override fun onTextContextMenuItem(id: Int): Boolean {
return try {
super.onTextContextMenuItem(id)
} catch (e: AbstractMethodError) {
// http://crashes.to/s/69acd0ea0de
true
}
}
internal class InternalMovementMethod : BaseMovementMethod() {
private var targetSpan: WeakReference<ClickableSpan?>? = null
override fun canSelectArbitrarily() = true
override fun onTouchEvent(widget: TextView, text: Spannable, event: MotionEvent): Boolean {
when (event.actionMasked) {
MotionEvent.ACTION_DOWN -> {
val layout = widget.layout
val x = event.x - widget.paddingLeft + widget.scrollX
val y = event.y - widget.paddingTop + widget.scrollY
val line = layout.getLineForVertical(y.roundToInt())
val offset = layout.getOffsetForHorizontal(line, x)
targetSpan = if (x <= layout.getLineWidth(line)) {
WeakReference(text.getSpans(offset, offset, ClickableSpan::class.java).firstOrNull())
} else {
null
}
}
MotionEvent.ACTION_UP -> {
val span = targetSpan?.get() ?: return false
span.onClick(widget)
targetSpan = null
return true
}
MotionEvent.ACTION_CANCEL -> {
targetSpan = null
}
}
return targetSpan?.get() != null
}
}
}