feat: get layoutParams with generateLayoutParams

Signed-off-by: Haruue Icymoon <[email protected]>
haruue-archive · Apr 6, 2018 · dcfd9c3 · dcfd9c3
1 parent 8e4a91f
commit dcfd9c3
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Showing 5 changed files with 45 additions and 13 deletions.
diff --git a/app/src/main/java/moe/haruue/layoutinflatertest/layout/ActivityJavaLayout.java b/app/src/main/java/moe/haruue/layoutinflatertest/layout/ActivityJavaLayout.java
@@ -7,6 +7,7 @@
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
 import android.widget.TextView;
+import static android.view.ViewGroup.LayoutParams.*;
 
 /**
  * @author Haruue Icymoon [email protected]
@@ -38,7 +39,9 @@ private ActivityJavaLayout(Context context) {
         // get these two guys from attrs first
         // construct parent layout's LayoutParams Class, get its type from stack.peek().type
         //      android:layout_width="wrap_content" android:layout_height="wrap_content"
-        LinearLayout.LayoutParams text1Param = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        LinearLayout.LayoutParams text1Param = new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT);
+        text1Param.width = WRAP_CONTENT;
+        text1Param.height = WRAP_CONTENT;
         // than ignore the id, layout_width and layout_height, find other thing...
         // begin with layout --> param.xxxxxx
         //      android:layout_gravity="start"

diff --git a/compiler/src/main/java/moe/haruue/layoutparser/compiler/LayoutParser.kt b/compiler/src/main/java/moe/haruue/layoutparser/compiler/LayoutParser.kt
@@ -1,10 +1,7 @@
 package moe.haruue.layoutparser.compiler
 
 import com.squareup.javapoet.*
-import moe.haruue.layoutparser.compiler.tools.cnActivity
-import moe.haruue.layoutparser.compiler.tools.cnContext
-import moe.haruue.layoutparser.compiler.tools.toClassName
-import moe.haruue.layoutparser.compiler.tools.underlineToUpperCamel
+import moe.haruue.layoutparser.compiler.tools.*
 import org.xmlpull.v1.XmlPullParser
 import org.xmlpull.v1.XmlPullParser.*
 import java.util.*
@@ -45,7 +42,12 @@ class LayoutParser(
     val methods = mutableListOf<MethodSpec>()
     val fields = mutableListOf<FieldSpec>()
 
-    private data class ViewType(val id: String, val type: String)
+    private data class ViewType(val id: String, val type: String) {
+        val layoutParamsClass
+            get() = type.toClass()
+                    .getMethodRecursive("generateLayoutParams", cAttributeSet)
+                    .returnType
+    }
     private data class Dimension(val value: Int, val unit: String)
     private val stack = Stack<ViewType>()
     private var currentNoId = 0
@@ -134,13 +136,14 @@ class LayoutParser(
 
         val parentClassName = parent.type.toClassName()
         val layoutParamsName = layoutParamsNameOf(name)
+        val layoutParamsType = parent.layoutParamsClass
 
         constructorBuilder.addStatement("""
             this.$name = new $T(context)
         """.trimIndent(), typeClassName)
         constructorBuilder.addStatement("""
-            $T.LayoutParams $layoutParamsName = new $T.LayoutParams(${width.value}, ${height.value})
-        """.trimIndent(), parentClassName, parentClassName)
+            $T $layoutParamsName = new $T(${width.value}, ${height.value})
+        """.trimIndent(), layoutParamsType, layoutParamsType)
 
         // parse other attrs here...
 

diff --git a/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/ClassNames.kt b/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/ClassNames.kt
@@ -6,5 +6,13 @@ import com.squareup.javapoet.ClassName
  *
  * @author Haruue Icymoon [email protected]
  */
+fun String.toClass(): Class<*> = Class.forName(this)
+fun ClassName.toClass(): Class<*> = reflectionName().toClass()
+fun Class<*>.toClassName(): ClassName = ClassName.get(this)
+fun String.toClassName(): ClassName = toClass().toClassName()
+
 val cnContext = ClassName.get("android.content", "Context")
-val cnActivity = ClassName.get("android.app", "Activity")
+val cnActivity = ClassName.get("android.app", "Activity")
+val cAttributeSet = Class.forName("android.util.AttributeSet")
+
+
diff --git a/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/Reflects.kt b/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/Reflects.kt
@@ -0,0 +1,22 @@
+package moe.haruue.layoutparser.compiler.tools
+
+import java.lang.reflect.Method
+
+/**
+ *
+ * @author Haruue Icymoon [email protected]
+ */
+fun Class<*>.getMethodRecursive(name: String, vararg parameterTypes: Class<*>): Method {
+    var clazz: Class<*>? = this
+    while (clazz != null) {
+        try {
+            return getMethod(name, *parameterTypes)
+        } catch (e: NoSuchMethodException) {
+            clazz = superclass
+        }
+    }
+    throw NoSuchMethodException(
+            "no such " +
+                    "method $name(${parameterTypes.joinToString(separator = ",")}) " +
+                    "in ${this.name}")
+}
diff --git a/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/Strings.kt b/compiler/src/main/java/moe/haruue/layoutparser/compiler/tools/Strings.kt
@@ -1,7 +1,5 @@
 package moe.haruue.layoutparser.compiler.tools
 
-import com.squareup.javapoet.ClassName
-
 /**
  *
  * @author Haruue Icymoon [email protected]
@@ -26,8 +24,6 @@ fun String.parseSimpleClassName(): String {
     return simpleName
 }
 
-fun String.toClassName(): ClassName = ClassName.get(parsePackageName(), parseSimpleClassName())
-
 fun String.underlineToUpperCamel(): String {
     val words = split("_")
     return words.joinToString(separator = "") { it.upperCaseFirst() }