Add support for blocking keywords for incoming messages

This adds support for filtering incoming messages based on
message body by checking if it contains any of the blocked keywords
(case insensitive). Regex and patterns are not supported at the moment.

NOTE: This does not currently support MMS, only SMS.

This closes #33

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ManageBlockedKeywordsActivity.kt

@@ -0,0 +1,89 @@
+package com.simplemobiletools.smsmessenger.activities
+
+import android.os.Bundle
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.beVisibleIf
+import com.simplemobiletools.commons.extensions.getProperPrimaryColor
+import com.simplemobiletools.commons.extensions.underlineText
+import com.simplemobiletools.commons.extensions.updateTextColors
+import com.simplemobiletools.commons.helpers.APP_ICON_IDS
+import com.simplemobiletools.commons.helpers.APP_LAUNCHER_NAME
+import com.simplemobiletools.commons.helpers.NavigationIcon
+import com.simplemobiletools.commons.helpers.ensureBackgroundThread
+import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
+import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.dialogs.AddBlockedKeywordDialog
+import com.simplemobiletools.smsmessenger.dialogs.ManageBlockedKeywordsAdapter
+import com.simplemobiletools.smsmessenger.extensions.config
+import com.simplemobiletools.smsmessenger.extensions.toArrayList
+import kotlinx.android.synthetic.main.activity_manage_blocked_keywords.*
+
+class ManageBlockedKeywordsActivity : BaseSimpleActivity(), RefreshRecyclerViewListener {
+    override fun getAppIconIDs() = intent.getIntegerArrayListExtra(APP_ICON_IDS) ?: ArrayList()
+
+    override fun getAppLauncherName() = intent.getStringExtra(APP_LAUNCHER_NAME) ?: ""
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        isMaterialActivity = true
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_manage_blocked_keywords)
+        updateBlockedKeywords()
+        setupOptionsMenu()
+
+        updateMaterialActivityViews(block_keywords_coordinator, manage_blocked_keywords_list, useTransparentNavigation = true, useTopSearchMenu = false)
+        setupMaterialScrollListener(manage_blocked_keywords_list, block_keywords_toolbar)
+        updateTextColors(manage_blocked_keywords_wrapper)
+
+        manage_blocked_keywords_placeholder_2.apply {
+            underlineText()
+            setTextColor(getProperPrimaryColor())
+            setOnClickListener {
+                addOrEditBlockedKeyword()
+            }
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        setupToolbar(block_keywords_toolbar, NavigationIcon.Arrow)
+    }
+
+    private fun setupOptionsMenu() {
+        block_keywords_toolbar.setOnMenuItemClickListener { menuItem ->
+            when (menuItem.itemId) {
+                R.id.add_blocked_keyword -> {
+                    addOrEditBlockedKeyword()
+                    true
+                }
+
+                else -> false
+            }
+        }
+    }
+
+    override fun refreshItems() {
+        updateBlockedKeywords()
+    }
+
+    private fun updateBlockedKeywords() {
+        ensureBackgroundThread {
+            val blockedKeywords = config.blockedKeywords
+            runOnUiThread {
+                ManageBlockedKeywordsAdapter(this, blockedKeywords.toArrayList(), this, manage_blocked_keywords_list) {
+                    addOrEditBlockedKeyword(it as String)
+                }.apply {
+                    manage_blocked_keywords_list.adapter = this
+                }
+
+                manage_blocked_keywords_placeholder.beVisibleIf(blockedKeywords.isEmpty())
+                manage_blocked_keywords_placeholder_2.beVisibleIf(blockedKeywords.isEmpty())
+            }
+        }
+    }
+
+    private fun addOrEditBlockedKeyword(keyword: String? = null) {
+        AddBlockedKeywordDialog(this, keyword) {
+            updateBlockedKeywords()
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/SettingsActivity.kt

@@ -37,6 +37,7 @@ class SettingsActivity : SimpleActivity() {
         setupUseEnglish()
         setupLanguage()
         setupManageBlockedNumbers()
+        setupManageBlockedKeywords()
         setupChangeDateTimeFormat()
         setupFontSize()
         setupShowCharacterCounter()
@@ -126,6 +127,20 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupManageBlockedKeywords() {
+        settings_manage_blocked_keywords.text = addLockedLabelIfNeeded(R.string.manage_blocked_keywords)
+
+        settings_manage_blocked_keywords_holder.setOnClickListener {
+            if (isOrWasThankYouInstalled()) {
+                Intent(this, ManageBlockedKeywordsActivity::class.java).apply {
+                    startActivity(this)
+                }
+            } else {
+                FeatureLockedDialog(this) { }
+            }
+        }
+    }
+
     private fun setupChangeDateTimeFormat() {
         settings_change_date_time_format_holder.setOnClickListener {
             ChangeDateTimeFormatDialog(this) {