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app/src/main/java/mozilla/lockbox/support/ParsedStructure.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package mozilla.lockbox.support | ||
|
|
||
| import android.annotation.TargetApi | ||
| import android.app.assist.AssistStructure | ||
| import android.os.Build | ||
| import android.view.View | ||
| import android.view.autofill.AutofillId | ||
| import mozilla.lockbox.log | ||
|
|
||
| @TargetApi(Build.VERSION_CODES.O) | ||
| class ParsedStructure(structure: AssistStructure) { | ||
| var usernameId: AutofillId? = null | ||
| var passwordId: AutofillId? = null | ||
|
|
||
| init { | ||
| usernameId = getUsernameId(structure) | ||
| passwordId = getPasswordId(structure) | ||
| } | ||
|
|
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| private fun getUsernameId(structure: AssistStructure): AutofillId? { | ||
| // how do we localize the "email" and "username"? | ||
| return getAutofillIdForKeywords(structure, listOf( | ||
| View.AUTOFILL_HINT_USERNAME, | ||
| View.AUTOFILL_HINT_EMAIL_ADDRESS, | ||
| "email", | ||
| "username", | ||
| "user name" | ||
| )) | ||
| } | ||
|
|
||
| private fun getPasswordId(structure: AssistStructure): AutofillId? { | ||
| // similar l10n question for password | ||
| return getAutofillIdForKeywords(structure, listOf(View.AUTOFILL_HINT_PASSWORD, "password")) | ||
| } | ||
|
|
||
| private fun getAutofillIdForKeywords(structure: AssistStructure, keywords: List<String>): AutofillId? { | ||
| val windowNodes = structure | ||
| .run { (0 until windowNodeCount).map { getWindowNodeAt(it) } } | ||
|
|
||
| var possibleAutofillIds = windowNodes | ||
| .map { searchBasicAutofillContent(it.rootViewNode, keywords) } | ||
|
|
||
| if (possibleAutofillIds.filterNotNull().isEmpty()) { | ||
| possibleAutofillIds += windowNodes | ||
| .map { checkForConsecutiveKeywordAndField(it.rootViewNode, keywords) } | ||
| } | ||
|
|
||
| return try { | ||
| possibleAutofillIds.first { it != null } | ||
| } catch (e: NoSuchElementException) { | ||
| null | ||
| } | ||
| } | ||
|
|
||
| private fun searchBasicAutofillContent(viewNode: AssistStructure.ViewNode?, keywords: List<String>): AutofillId? { | ||
| // this method is getting less & less performant | ||
| val node = viewNode ?: return null | ||
|
|
||
| if (containsKeywords(node, keywords) && | ||
| node.autofillId != null && | ||
| node.className == "android.widget.EditText") { | ||
| return node.autofillId | ||
| } | ||
|
|
||
| return try { | ||
| node.run { (0 until childCount).map { getChildAt(it) } } | ||
| .map { searchBasicAutofillContent(it, keywords) } | ||
| .first { it != null } | ||
| } catch (e: NoSuchElementException) { | ||
| null | ||
| } | ||
| } | ||
|
|
||
| private fun checkForConsecutiveKeywordAndField(node: AssistStructure.ViewNode, keywords: List<String>): AutofillId? { | ||
| val childNodes = node | ||
| .run { (0 until childCount).map { getChildAt(it) } } | ||
|
|
||
| // check for consecutive views with keywords followed by possible fill locations | ||
| for (i in 1..(childNodes.size - 1)) { | ||
| val prevNode = childNodes[i - 1] | ||
| val currentNode = childNodes[i] | ||
| currentNode.autofillId?.let { | ||
| if (containsKeywords(prevNode, keywords) && | ||
| currentNode.className == "android.widget.EditText") { | ||
| return it | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return try { | ||
| childNodes | ||
| .map { checkForConsecutiveKeywordAndField(it, keywords) } | ||
| .first { it != null } | ||
| } catch (e: NoSuchElementException) { | ||
| null | ||
| } | ||
| } | ||
|
|
||
| private fun containsKeywords(node: AssistStructure.ViewNode, keywords: List<String>): Boolean { | ||
| val autofillHints = node.autofillHints?.toList() ?: emptyList() | ||
| var hints = listOf(node.hint) + listOf(node.text) + autofillHints | ||
|
|
||
| hints = hints.filterNotNull() | ||
|
|
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| keywords.forEach { keyword -> | ||
| hints.forEach { hint -> | ||
| if (hint.contains(keyword, true)) { | ||
| return true | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return false | ||
| } | ||
| } |
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