Add autocompletion for custom emoji (#1089)

* Remove unnecessary //noinspection ConstantConditions * Add autocompletion for custom emoji * Update MentionTagTokenizer tests for emoji autocomplete support * Move 1) emoji list retrieval notifying and 2) setting of emojiList field into setEmojiList() method of ComposeActivity * Convert RelativeLayout in item_autocomplete_emoji.xml to LinearLayout * Rename MentionTag* to Compose* * Improve emoji autocomplete matching * Make hashtag autocomplete results bold * Use Context.getString()'s built-in formatting * Add a divider between emoji autocomplete results that *start with* the token and those that *contain* it
2019-03-04 10:28:08 -08:00 · 2019-03-04 10:28:08 -08:00 · 10fcee4798
commit 10fcee4798
parent d43b4fef4b
14 changed files with 232 additions and 38 deletions
--- a/app/src/main/java/com/keylesspalace/tusky/util/ComposeTokenizer.kt
+++ b/app/src/main/java/com/keylesspalace/tusky/util/ComposeTokenizer.kt
@ -0,0 +1,74 @@
+/* Copyright 2017 Andrew Dawson
+ *
+ * This file is a part of Tusky.
+ *
+ * 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.
+ *
+ * Tusky 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 Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.util
+
+import android.text.SpannableString
+import android.text.Spanned
+import android.text.TextUtils
+import android.widget.MultiAutoCompleteTextView
+
+class ComposeTokenizer : MultiAutoCompleteTextView.Tokenizer {
+    override fun findTokenStart(text: CharSequence, cursor: Int): Int {
+        if (cursor == 0) {
+            return cursor
+        }
+        var i = cursor
+        var character = text[i - 1]
+        while (i > 0 && character != '@' && character != '#' && character != ':') {
+            // See SpanUtils.MENTION_REGEX
+            if (!Character.isLetterOrDigit(character) && character != '_') {
+                return cursor
+            }
+            i--
+            character = if (i == 0) ' ' else text[i - 1]
+        }
+        if (i < 1
+                || (character != '@' && character != '#' && character != ':')
+                || i > 1 && !Character.isWhitespace(text[i - 2])) {
+            return cursor
+        }
+        return i - 1
+    }
+
+    override fun findTokenEnd(text: CharSequence, cursor: Int): Int {
+        var i = cursor
+        val length = text.length
+        while (i < length) {
+            if (text[i] == ' ') {
+                return i
+            } else {
+                i++
+            }
+        }
+        return length
+    }
+
+    override fun terminateToken(text: CharSequence): CharSequence {
+        var i = text.length
+        while (i > 0 && text[i - 1] == ' ') {
+            i--
+        }
+        return if (i > 0 && text[i - 1] == ' ') {
+            text
+        } else if (text is Spanned) {
+            val s = SpannableString(text.toString() + " ")
+            TextUtils.copySpansFrom(text, 0, text.length, Object::class.java, s, 0)
+            s
+        } else {
+            text.toString() + " "
+        }
+    }
+}