替换界面添加正则帮助链接

app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt

@@ -17,9 +17,11 @@ import io.legado.app.constant.EventBus
 import io.legado.app.data.entities.ReplaceRule
 import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.utils.getViewModel
+import io.legado.app.utils.openUrl
 import io.legado.app.utils.postEvent
 import kotlinx.android.synthetic.main.activity_replace_edit.*
 import org.jetbrains.anko.displayMetrics
+import org.jetbrains.anko.sdk27.listeners.onClick
 import org.jetbrains.anko.toast
 import kotlin.math.abs
 
@@ -58,10 +60,12 @@ class ReplaceEditActivity :
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         mSoftKeyboardTool = KeyboardToolPop(this, AppConst.keyboardToolChars, this)
         window.decorView.viewTreeObserver.addOnGlobalLayoutListener(this)
-        viewModel.replaceRuleData.observe(this, {
+        viewModel.initData(intent) {
             upReplaceView(it)
-        })
-        viewModel.initData(intent)
+        }
+        iv_help.onClick {
+            openUrl("https://www.runoob.com/regexp/regexp-syntax.html")
+        }
     }
 
     override fun onCompatCreateOptionsMenu(menu: Menu): Boolean {
@@ -96,7 +100,7 @@ class ReplaceEditActivity :
     }
 
     private fun getReplaceRule(): ReplaceRule {
-        val replaceRule: ReplaceRule = viewModel.replaceRuleData.value ?: ReplaceRule()
+        val replaceRule: ReplaceRule = viewModel.replaceRule ?: ReplaceRule()
         replaceRule.name = et_name.text.toString()
         replaceRule.group = et_group.text.toString()
         replaceRule.pattern = et_replace_rule.text.toString()

app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditViewModel.kt

@@ -2,35 +2,36 @@ package io.legado.app.ui.replace.edit
 
 import android.app.Application
 import android.content.Intent
-import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.entities.ReplaceRule
 
 class ReplaceEditViewModel(application: Application) : BaseViewModel(application) {
 
-    val replaceRuleData = MutableLiveData<ReplaceRule>()
+    var replaceRule: ReplaceRule? = null
 
-    fun initData(intent: Intent) {
+    fun initData(intent: Intent, finally: (replaceRule: ReplaceRule) -> Unit) {
         execute {
-            replaceRuleData.value ?: let {
-                val id = intent.getLongExtra("id", -1)
-                if (id > 0) {
-                    App.db.replaceRuleDao().findById(id)?.let {
-                        replaceRuleData.postValue(it)
-                    }
-                } else {
-                    val pattern = intent.getStringExtra("pattern") ?: ""
-                    val isRegex = intent.getBooleanExtra("isRegex", false)
-                    val scope = intent.getStringExtra("scope")
-                    val rule = ReplaceRule(
-                        name = pattern,
-                        pattern = pattern,
-                        isRegex = isRegex,
-                        scope = scope
-                    )
-                    replaceRuleData.postValue(rule)
+            val id = intent.getLongExtra("id", -1)
+            if (id > 0) {
+                App.db.replaceRuleDao().findById(id)?.let {
+                    replaceRule = it
                 }
+            } else {
+                val pattern = intent.getStringExtra("pattern") ?: ""
+                val isRegex = intent.getBooleanExtra("isRegex", false)
+                val scope = intent.getStringExtra("scope")
+                val rule = ReplaceRule(
+                    name = pattern,
+                    pattern = pattern,
+                    isRegex = isRegex,
+                    scope = scope
+                )
+                replaceRule = rule
+            }
+        }.onFinally {
+            replaceRule?.let {
+                finally(it)
             }
         }
     }

app/src/main/res/layout/activity_replace_edit.xml

@@ -62,11 +62,28 @@
                     android:layout_height="wrap_content" />
             </io.legado.app.ui.widget.text.TextInputLayout>
 
-            <io.legado.app.lib.theme.view.ATECheckBox
-                android:id="@+id/cb_use_regex"
+            <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:text="@string/use_regex" />
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+
+                <io.legado.app.lib.theme.view.ATECheckBox
+                    android:id="@+id/cb_use_regex"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/use_regex" />
+
+                <ImageView
+                    android:id="@+id/iv_help"
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:src="@drawable/ic_help"
+                    app:tint="@color/secondaryText"
+                    android:contentDescription="@string/help" />
+
+            </LinearLayout>
 
             <io.legado.app.ui.widget.text.TextInputLayout
                 android:id="@+id/til_replace_to"