forked from GitHub-Mirror/riotX-android
55 lines
1.9 KiB
Kotlin
55 lines
1.9 KiB
Kotlin
/*
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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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package im.vector.matrix.android.api.permalinks
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import android.text.Spannable
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import im.vector.matrix.android.api.MatrixPatterns
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/**
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* MatrixLinkify take a piece of text and turns all of the
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* matrix patterns matches in the text into clickable links.
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*/
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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 (pattern in MatrixPatterns.MATRIX_PATTERNS) {
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for (match in pattern.findAll(spannable)) {
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hasMatch = true
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val startPos = match.range.first
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if (startPos == 0 || text[startPos - 1] != '/') {
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val endPos = match.range.last
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val url = text.substring(match.range)
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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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} |