From e136957d3607a4c76a4dc3e717cee081c3dcba63 Mon Sep 17 00:00:00 2001
From: Vaibhav2002 <vaibhav.jaiswal3011@gmail.com>
Date: Sat, 18 Nov 2023 21:23:28 +0530
Subject: [PATCH] feat: Add MaxLength validation

---
 .../mohamedrejeb/richeditor/model/RichTextConfig.kt    |  1 +
 .../com/mohamedrejeb/richeditor/model/RichTextState.kt | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextConfig.kt b/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextConfig.kt
index 2c6dc38c..5f70f053 100644
--- a/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextConfig.kt
+++ b/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextConfig.kt
@@ -4,6 +4,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextDecoration
 
 internal data class RichTextConfig(
+    val maxLength: Int? = null,
     val linkColor: Color = Color.Blue,
     val linkTextDecoration: TextDecoration = TextDecoration.Underline,
     val codeColor: Color = Color.Unspecified,
diff --git a/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextState.kt b/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextState.kt
index e7460943..8cc94be9 100644
--- a/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextState.kt
+++ b/richeditor-compose/src/commonMain/kotlin/com/mohamedrejeb/richeditor/model/RichTextState.kt
@@ -139,6 +139,7 @@ class RichTextState internal constructor(
 
     @ExperimentalRichTextApi
     fun setConfig(
+        maxLength: Int? = null,
         linkColor: Color = Color.Unspecified,
         linkTextDecoration: TextDecoration? = null,
         codeColor: Color = Color.Unspecified,
@@ -146,6 +147,7 @@ class RichTextState internal constructor(
         codeStrokeColor: Color = Color.Unspecified,
     ) {
         richTextConfig = RichTextConfig(
+            maxLength = maxLength,
             linkColor = if (linkColor.isSpecified) linkColor else richTextConfig.linkColor,
             linkTextDecoration = if (linkTextDecoration != null) linkTextDecoration else richTextConfig.linkTextDecoration,
             codeColor = if (codeColor.isSpecified) codeColor else richTextConfig.codeColor,
@@ -519,6 +521,8 @@ class RichTextState internal constructor(
     internal fun onTextFieldValueChange(newTextFieldValue: TextFieldValue) {
         if (readOnly) return
 
+        if(isExceedingMaxLength(newTextFieldValue)) return
+
         tempTextFieldValue = newTextFieldValue
 
         if (tempTextFieldValue.text.length > textFieldValue.text.length)
@@ -548,6 +552,8 @@ class RichTextState internal constructor(
     private fun updateTextFieldValue(newTextFieldValue: TextFieldValue = tempTextFieldValue) {
         tempTextFieldValue = newTextFieldValue
 
+        if(isExceedingMaxLength(newTextFieldValue)) return
+
         if (!singleParagraphMode) {
             // Check for paragraphs
             checkForParagraphs()
@@ -2172,6 +2178,10 @@ class RichTextState internal constructor(
         updateTextFieldValue(TextFieldValue())
     }
 
+    fun isExceedingMaxLength(value: TextFieldValue) = richTextConfig.maxLength?.let {
+        value.text.length > it
+    } ?: false
+
     companion object {
         val Saver: Saver<RichTextState, *> = listSaver(
             save = {