fix: use SnapshotMaxDepth in UiElementSnapshot

app/src/main/java/io/appium/uiautomator2/model/UiElementSnapshot.java

@@ -39,6 +39,7 @@
 import io.appium.uiautomator2.core.AxNodeInfoHelper;
 import io.appium.uiautomator2.model.settings.AllowInvisibleElements;
 import io.appium.uiautomator2.model.settings.IncludeExtrasInPageSource;
+import io.appium.uiautomator2.model.settings.SnapshotMaxDepth;
 import io.appium.uiautomator2.model.settings.Settings;
 import io.appium.uiautomator2.utils.Attribute;
 import io.appium.uiautomator2.utils.Logger;
@@ -55,8 +56,6 @@
 @TargetApi(18)
 public class UiElementSnapshot extends UiElement<AccessibilityNodeInfo, UiElementSnapshot> {
     private final static String ROOT_NODE_NAME = "hierarchy";
-    // https://github.com/appium/appium/issues/12545
-    private final static int DEFAULT_MAX_DEPTH = 70;
     // The same order will be used for node attributes in xml page source
     public final static Attribute[] SUPPORTED_ATTRIBUTES = new Attribute[]{
             Attribute.INDEX, Attribute.PACKAGE, Attribute.CLASS, Attribute.TEXT,
@@ -95,15 +94,15 @@ private UiElementSnapshot(AccessibilityNodeInfo node, int index, int depth, int
 
     private UiElementSnapshot(AccessibilityNodeInfo node, int index, int depth,
                               Set<Attribute> includedAttributes) {
-        this(node, index, depth, DEFAULT_MAX_DEPTH, includedAttributes);
+        this(node, index, depth, Settings.get(SnapshotMaxDepth.class).getValue(), includedAttributes);
     }
 
     private UiElementSnapshot(AccessibilityNodeInfo[] childNodes,
                               Set<Attribute> includedAttributes) {
         super(null);
         this.depth = 0;
         this.index = 0;
-        this.maxDepth = DEFAULT_MAX_DEPTH;
+        this.maxDepth = Settings.get(SnapshotMaxDepth.class).getValue();
         Map<Attribute, Object> attribs = new LinkedHashMap<>();
         putAttribute(attribs, Attribute.INDEX, this.index);
         putAttribute(attribs, Attribute.CLASS, ROOT_NODE_NAME);

app/src/main/java/io/appium/uiautomator2/model/settings/SnapshotMaxDepth.java

@@ -18,17 +18,19 @@
 
 public class SnapshotMaxDepth extends AbstractSetting<Integer> {
     public static final String SETTING_NAME = "snapshotMaxDepth";
+    // Set DEFAULT_VALUE as 70 to avoid StackOverflow from infinite recursion
+    // https://github.com/appium/appium/issues/12545
     // https://github.com/appium/appium/issues/12892
     private static final Integer DEFAULT_VALUE = 70;
-    private Integer snapshotMaxDepth = DEFAULT_VALUE;
+    private Integer value = DEFAULT_VALUE;
 
     public SnapshotMaxDepth() {
         super(Integer.class, SETTING_NAME);
     }
 
     @Override
     public Integer getValue() {
-        return snapshotMaxDepth;
+        return value;
     }
 
     @Override
@@ -38,6 +40,6 @@ public Integer getDefaultValue() {
 
     @Override
     protected void apply(Integer value) {
-        snapshotMaxDepth = value;
+        this.value = value;
     }
 }