Merge pull request #199 from TouchInstinct/action_text_view

Add TextView with ClickableSpan substring

kotlin-extensions/src/main/java/ru/touchin/extensions/CharSequence.kt

@@ -0,0 +1,3 @@
+package ru.touchin.extensions
+
+fun CharSequence.indexesOf(substring: String) = Regex(substring).find(this)?.let { it.range.first to it.range.last + 1 }

utils/build.gradle

@@ -1,6 +1,7 @@
 apply from: "../android-configs/lib-config.gradle"
 
 dependencies {
+    implementation project(':kotlin-extensions')
     implementation "androidx.core:core"
     implementation "androidx.annotation:annotation"
 

utils/src/main/java/ru/touchin/roboswag/components/utils/spans/SpanUtils.kt

@@ -2,9 +2,15 @@ package ru.touchin.roboswag.components.utils.spans
 
 import android.text.SpannableString
 import android.text.Spanned
+import android.text.TextPaint
+import android.text.style.ClickableSpan
+import android.text.style.ForegroundColorSpan
 import android.text.style.URLSpan
 import android.text.util.Linkify
+import android.view.View
+import androidx.annotation.ColorInt
 import androidx.core.text.HtmlCompat
+import ru.touchin.extensions.indexesOf
 
 /**
  * Convert text with 'href' tags and raw links to spanned text with clickable URLSpan.
@@ -47,3 +53,28 @@ private fun SpannableString.getUrlSpans() = getSpans(0, length, URLSpan::class.j
         .map { UrlSpanWithBorders(it, this.getSpanStart(it), this.getSpanEnd(it)) }
 
 private data class UrlSpanWithBorders(val span: URLSpan, val start: Int, val end: Int)
+
+/**
+ * Find substring inside string (for example in TextView) and fill it with ClickableSpan
+ */
+fun CharSequence.toClickableSubstringText(
+        substring: String,
+        clickAction: () -> Unit,
+        @ColorInt color: Int? = null,
+        isUnderlineText: Boolean = false
+) = SpannableString(this)
+        .apply {
+            indexesOf(substring)?.let { (startSpan, endSpan) ->
+                setSpan(object : ClickableSpan() {
+                    override fun onClick(widget: View) {
+                        clickAction.invoke()
+                    }
+
+                    override fun updateDrawState(ds: TextPaint) {
+                        super.updateDrawState(ds)
+                        ds.isUnderlineText = isUnderlineText
+                        if (color != null) ds.color = color
+                    }
+                }, startSpan, endSpan, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+            }
+        }

views/src/main/java/ru/touchin/roboswag/views/ActionTextView.kt

@@ -0,0 +1,44 @@
+package ru.touchin.roboswag.views
+
+import android.content.Context
+import android.graphics.Color
+import android.util.AttributeSet
+import androidx.appcompat.widget.AppCompatTextView
+import androidx.core.content.withStyledAttributes
+import ru.touchin.roboswag.components.utils.movementmethods.ClickableMovementMethod
+import ru.touchin.roboswag.components.utils.spans.toClickableSubstringText
+
+class ActionTextView @JvmOverloads constructor(
+        context: Context,
+        attrs: AttributeSet? = null,
+        defStyleAttr: Int = 0
+) : AppCompatTextView(context, attrs, defStyleAttr) {
+
+    private var onClickAction: () -> Unit = { }
+
+    init {
+        isClickable = false
+        isLongClickable = false
+        highlightColor = Color.TRANSPARENT
+
+        movementMethod = ClickableMovementMethod
+
+        context.withStyledAttributes(attrs, R.styleable.ActionTextView, defStyleAttr, 0) {
+            val actionText = getString(R.styleable.ActionTextView_actionText).orEmpty()
+            val actionColor = getColor(R.styleable.ActionTextView_actionColor, currentTextColor)
+            val isUnderlineText = getBoolean(R.styleable.ActionTextView_isUnderlineText, false)
+
+            text = text.toClickableSubstringText(
+                    substring = actionText,
+                    clickAction = { onClickAction.invoke() },
+                    color = actionColor,
+                    isUnderlineText = isUnderlineText
+            )
+        }
+    }
+
+    fun setOnActionClickListener(onClickAction: () -> Unit) {
+        this.onClickAction = onClickAction
+    }
+
+}

views/src/main/res/values/attrs.xml

@@ -50,4 +50,10 @@
         <attr name="stubText" format="string" />
     </declare-styleable>
 
+    <declare-styleable name="ActionTextView">
+        <attr name="actionText" format="string"/>
+        <attr name="actionColor" format="color"/>
+        <attr name="isUnderlineText" format="boolean"/>
+    </declare-styleable>
+
 </resources>