binding the expanded state as part of the view, allows us to manually control the expansion

vector/src/main/java/im/vector/app/core/epoxy/ExpandableTextItem.kt

@@ -43,7 +43,13 @@ abstract class ExpandableTextItem : VectorEpoxyModel<ExpandableTextItem.Holder>(
     @EpoxyAttribute
     var enableScrollBar = true
 
-    private var isExpanded = false
+    @EpoxyAttribute
+    var expanded: Boolean? = null
+
+    @EpoxyAttribute(EpoxyAttribute.Option.DoNotHash)
+    var onExpandClicked: () -> Unit? = {}
+
+    private var internalIsExpanded = false
     private var expandedLines = 0
 
     override fun bind(holder: Holder) {
@@ -53,18 +59,31 @@ abstract class ExpandableTextItem : VectorEpoxyModel<ExpandableTextItem.Holder>(
         holder.content.copyOnLongClick()
         holder.content.movementMethod = movementMethod
 
-        holder.content.doOnPreDraw {
+        if (expanded == null) {
-            if (holder.content.lineCount > maxLines) {
-                expandedLines = holder.content.lineCount
-                holder.content.maxLines = maxLines
-
             holder.view.setOnClickListener {
-                    if (isExpanded) {
+                if (internalIsExpanded) {
                     collapse(holder)
                 } else {
                     expand(holder)
                 }
             }
+        } else {
+            holder.view.setOnClickListener { onExpandClicked() }
+        }
+
+        holder.content.doOnPreDraw {
+            if (holder.content.lineCount > maxLines) {
+                expandedLines = holder.content.lineCount
+                holder.content.maxLines = maxLines
+
+                expanded?.let { expanded ->
+                    if (expanded) {
+                        expand(holder)
+                    } else {
+                        collapse(holder)
+                    }
+                }
+
                 holder.arrow.isVisible = true
             } else {
                 holder.arrow.isVisible = false
@@ -81,7 +100,7 @@ abstract class ExpandableTextItem : VectorEpoxyModel<ExpandableTextItem.Holder>(
         holder.content.ellipsize = null
         holder.arrow.setImageResource(R.drawable.ic_expand_less)
         holder.arrow.contentDescription = holder.view.context.getString(R.string.merged_events_collapse)
-        isExpanded = true
+        internalIsExpanded = true
     }
 
     private fun collapse(holder: Holder) {
@@ -93,7 +112,7 @@ abstract class ExpandableTextItem : VectorEpoxyModel<ExpandableTextItem.Holder>(
         holder.content.ellipsize = TextUtils.TruncateAt.END
         holder.arrow.setImageResource(R.drawable.ic_expand_more)
         holder.arrow.contentDescription = holder.view.context.getString(R.string.merged_events_expand)
-        isExpanded = false
+        internalIsExpanded = false
     }
 
     class Holder : VectorEpoxyHolder() {

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsAction.kt

@@ -31,4 +31,5 @@ sealed class DiscoverySettingsAction : VectorViewModelAction {
     data class FinalizeBind3pid(val threePid: ThreePid) : DiscoverySettingsAction()
     data class SubmitMsisdnToken(val threePid: ThreePid.Msisdn, val code: String) : DiscoverySettingsAction()
     data class CancelBinding(val threePid: ThreePid) : DiscoverySettingsAction()
+    object PolicyUrlsExpandedStateToggled : DiscoverySettingsAction()
 }

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsController.kt

@@ -15,6 +15,7 @@
  */
 package im.vector.app.features.discovery
 
+import android.text.method.LinkMovementMethod
 import com.airbnb.epoxy.TypedEpoxyController
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.Fail
@@ -134,7 +135,11 @@ class DiscoverySettingsController @Inject constructor(
                     append(title)
                     appendNl(policyUrls)
                 })
-                movementMethod(EvenBetterLinkMovementMethod())
+                movementMethod(LinkMovementMethod())
+                expanded(data.isIdentityPolicyUrlsExpanded)
+                onExpandClicked {
+                    host.listener?.onPolicyUrlsExpandedStateToggled()
+                }
             }
         }
 
@@ -419,5 +424,6 @@ class DiscoverySettingsController @Inject constructor(
         fun onTapDisconnectIdentityServer()
         fun onTapUpdateUserConsent(newValue: Boolean)
         fun onTapRetryToRetrieveBindings()
+        fun onPolicyUrlsExpandedStateToggled()
     }
 }

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsFragment.kt

@@ -192,6 +192,10 @@ class DiscoverySettingsFragment @Inject constructor(
         viewModel.handle(DiscoverySettingsAction.RetrieveBinding)
     }
 
+    override fun onPolicyUrlsExpandedStateToggled() {
+        viewModel.handle(DiscoverySettingsAction.PolicyUrlsExpandedStateToggled)
+    }
+
     private fun navigateToChangeIdentityServerFragment() {
         (vectorBaseActivity as? VectorSettingsActivity)?.navigateTo(SetIdentityServerFragment::class.java)
     }

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsState.kt

@@ -27,7 +27,8 @@ data class DiscoverySettingsState(
         val phoneNumbersList: Async<List<PidInfo>> = Uninitialized,
         // Can be true if terms are updated
         val termsNotSigned: Boolean = false,
-        val userConsent: Boolean = false
+        val userConsent: Boolean = false,
+        val isIdentityPolicyUrlsExpanded: Boolean = false
 ) : MvRxState
 
 data class IdentityServerWithTerms(

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsViewModel.kt

@@ -114,6 +114,7 @@ class DiscoverySettingsViewModel @AssistedInject constructor(
             DiscoverySettingsAction.Refresh                        -> fetchContent()
             DiscoverySettingsAction.RetrieveBinding                -> retrieveBinding()
             DiscoverySettingsAction.DisconnectIdentityServer       -> disconnectIdentityServer()
+            DiscoverySettingsAction.PolicyUrlsExpandedStateToggled -> toggleExpandedPolicyUrlsState()
             is DiscoverySettingsAction.ChangeIdentityServer        -> changeIdentityServer(action)
             is DiscoverySettingsAction.UpdateUserConsent           -> handleUpdateUserConsent(action)
             is DiscoverySettingsAction.RevokeThreePid              -> revokeThreePid(action)
@@ -147,6 +148,14 @@ class DiscoverySettingsViewModel @AssistedInject constructor(
         }
     }
 
+    private fun toggleExpandedPolicyUrlsState() {
+        withState {
+            setState {
+                copy(isIdentityPolicyUrlsExpanded = !it.isIdentityPolicyUrlsExpanded)
+            }
+        }
+    }
+
     private fun changeIdentityServer(action: DiscoverySettingsAction.ChangeIdentityServer) {
         setState { copy(identityServer = Loading()) }