forked from GitHub-Mirror/riotX-android
89 lines
3.0 KiB
Kotlin
89 lines
3.0 KiB
Kotlin
/*
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*
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* * Copyright 2019 New Vector Ltd
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* *
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* * Licensed under the Apache License, Version 2.0 (the "License");
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* * you may not use this file except in compliance with the License.
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* * You may obtain a copy of the License at
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* *
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* * http://www.apache.org/licenses/LICENSE-2.0
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* *
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS,
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* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* * See the License for the specific language governing permissions and
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* * limitations under the License.
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*
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*/
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package im.vector.matrix.android.api.permalinks
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import android.text.Spannable
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import android.text.SpannableString
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import android.text.method.LinkMovementMethod
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import android.widget.TextView
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import im.vector.matrix.android.api.MatrixPatterns
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object MatrixLinkify {
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/**
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* Find the matrix spans i.e matrix id , user id ... to display them as URL.
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*
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* @param spannable the text in which the matrix items has to be clickable.
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*/
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fun addLinks(spannable: Spannable?, callback: MatrixPermalinkSpan.Callback?): Boolean {
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// sanity checks
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if (spannable.isNullOrEmpty()) {
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return false
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}
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val text = spannable.toString()
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var hasMatch = false
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for (index in MatrixPatterns.MATRIX_PATTERNS.indices) {
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val pattern = MatrixPatterns.MATRIX_PATTERNS[index]
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val matcher = pattern.matcher(spannable)
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while (matcher.find()) {
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hasMatch = true
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val startPos = matcher.start(0)
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if (startPos == 0 || text[startPos - 1] != '/') {
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val endPos = matcher.end(0)
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val url = text.substring(matcher.start(0), matcher.end(0))
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val span = MatrixPermalinkSpan(url, callback)
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spannable.setSpan(span, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
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}
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}
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}
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return hasMatch
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}
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fun addLinks(textView: TextView, callback: MatrixPermalinkSpan.Callback?): Boolean {
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val text = textView.text
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if (text is Spannable) {
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if (addLinks(text, callback)) {
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addLinkMovementMethod(textView)
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return true
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}
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return false
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} else {
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val spannableString = SpannableString.valueOf(text)
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if (addLinks(spannableString, callback)) {
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addLinkMovementMethod(textView)
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textView.text = spannableString
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return true
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}
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return false
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}
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}
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fun addLinkMovementMethod(textView: TextView) {
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val movementMethod = textView.movementMethod
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if (movementMethod == null || movementMethod !is LinkMovementMethod) {
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if (textView.linksClickable) {
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textView.movementMethod = LinkMovementMethod.getInstance()
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}
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}
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}
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} |