Added rowHeight property for ListView.

ui/list-view/list-view-common.ts

@@ -14,6 +14,7 @@ var ITEMTEMPLATE = "itemTemplate";
 var ISSCROLLING = "isScrolling";
 var LISTVIEW = "ListView";
 var SEPARATORCOLOR = "separatorColor";
+var ROWHEIGHT = "rowHeight";
 
 export module knownTemplates {
     export var itemTemplate = "itemTemplate";
@@ -29,6 +30,11 @@ function onItemTemplatePropertyChanged(data: dependencyObservable.PropertyChange
     listView.refresh();
 }
 
+function onRowHeightPropertyChanged(data: dependencyObservable.PropertyChangeData) {
+    var listView = <ListView>data.object;
+    listView._onRowHeightPropertyChanged(data);
+}
+
 export class ListView extends view.View implements definition.ListView {
     public static itemLoadingEvent = "itemLoading";
     public static itemTapEvent = "itemTap";
@@ -66,7 +72,17 @@ export class ListView extends view.View implements definition.ListView {
             false,
             dependencyObservable.PropertyMetadataSettings.None
             )
-        );
+    );
+
+    public static rowHeightProperty = new dependencyObservable.Property(
+        ROWHEIGHT,
+        LISTVIEW,
+        new proxy.PropertyMetadata(
+            -1,
+            dependencyObservable.PropertyMetadataSettings.AffectsLayout,
+            onRowHeightPropertyChanged
+            )
+    );
 
     get items(): any {
         return this._getValue(ListView.itemsProperty);
@@ -97,6 +113,13 @@ export class ListView extends view.View implements definition.ListView {
             value instanceof color.Color ? value : new color.Color(<any>value));
     }
 
+    get rowHeight(): number {
+        return this._getValue(ListView.rowHeightProperty);
+    }
+    set rowHeight(value: number) {
+        this._setValue(ListView.rowHeightProperty, value);
+    }
+
     public refresh() {
         //
     }
@@ -155,6 +178,10 @@ export class ListView extends view.View implements definition.ListView {
         this.refresh();
     }
 
+    public _onRowHeightPropertyChanged(data: dependencyObservable.PropertyChangeData) {
+        this.refresh();
+    }
+
     public _propagateInheritableProperties(view: view.View) {
         // do not get binding context from parent when adding items, since the binding context of the items will be different.
     }

ui/list-view/list-view.android.ts

@@ -205,6 +205,12 @@ class ListViewAdapter extends android.widget.BaseAdapter {
         }
 
         if (args.view) {
+            if (this._listView.rowHeight > -1) {
+                args.view.height = this._listView.rowHeight;
+            }
+            else {
+                args.view.height = Number.NaN;
+            }
             this._listView._prepareItem(args.view, index);
             if (!args.view.parent) {
                 if (args.view instanceof layoutBaseModule.LayoutBase) {

ui/list-view/list-view.d.ts

@@ -49,6 +49,11 @@ declare module "ui/list-view" {
          */
         public static isScrollingProperty: dependencyObservable.Property;
 
+        /**
+         * Represents the observable property backing the rowHeight property of each ListView instance.
+         */
+        public static rowHeightProperty: dependencyObservable.Property;
+
         /**
          * Gets the native [android widget](http://developer.android.com/reference/android/widget/ListView.html) that represents the user interface for this component. Valid only when running on Android OS.
          */
@@ -80,6 +85,11 @@ declare module "ui/list-view" {
          */
         separatorColor: color.Color;
 
+        /**
+         * Gets or set row height of the ListView.
+         */
+        rowHeight: number;
+
         /**
          * Forces the ListView to reload all its items.
          */

ui/list-view/list-view.ios.ts

@@ -11,7 +11,7 @@ var CELLIDENTIFIER = "cell";
 var ITEMLOADING = common.ListView.itemLoadingEvent;
 var LOADMOREITEMS = common.ListView.loadMoreItemsEvent;
 var ITEMTAP = common.ListView.itemTapEvent;
-var DEFAULT_HEIGHT = 80;
+var DEFAULT_HEIGHT = 44;
 
 global.moduleMerge(common, exports);
 
@@ -69,7 +69,8 @@ class DataSource extends NSObject implements UITableViewDataSource {
                 // Arrange cell views. We do it here instead of _layoutCell because _layoutCell is called 
                 // from 'tableViewHeightForRowAtIndexPath' method too (in iOS 7.1) and we don't want to arrange the fake cell.
                 let width = utils.layout.getMeasureSpecSize(owner.widthMeasureSpec);
-                let cellHeight = owner.getHeight(indexPath.row);
+                let rowHeight = owner._nativeView.rowHeight;
+                let cellHeight = rowHeight > 0 ? rowHeight : owner.getHeight(indexPath.row);
                 view.View.layoutChild(owner, cellView, 0, 0, width, cellHeight);
             }
         }
@@ -132,6 +133,35 @@ class UITableViewDelegateImpl extends NSObject implements UITableViewDelegate {
     }
 }
 
+class UITableViewRowHeightDelegateImpl extends NSObject implements UITableViewDelegate {
+    public static ObjCProtocols = [UITableViewDelegate];
+
+    private _owner: WeakRef<ListView>;
+
+    public static initWithOwner(owner: WeakRef<ListView>): UITableViewRowHeightDelegateImpl {
+        let delegate = <UITableViewRowHeightDelegateImpl>UITableViewRowHeightDelegateImpl.new();
+        delegate._owner = owner;
+        return delegate;
+    }
+
+    public tableViewWillDisplayCellForRowAtIndexPath(tableView: UITableView, cell: UITableViewCell, indexPath: NSIndexPath) {
+        let owner = this._owner.get();
+        if (owner && (indexPath.row === owner.items.length - 1)) {
+            owner.notify(<observable.EventData>{ eventName: LOADMOREITEMS, object: owner });
+        }
+    }
+
+    public tableViewWillSelectRowAtIndexPath(tableView: UITableView, indexPath: NSIndexPath): NSIndexPath {
+        let cell = <ListViewCell>tableView.cellForRowAtIndexPath(indexPath);
+        let owner = this._owner.get();
+        if (owner) {
+            notifyForItemAtIndex(owner, cell, cell.view, ITEMTAP, indexPath);
+        }
+        cell.highlighted = false;
+        return indexPath;
+    }
+}
+
 function onSeparatorColorPropertyChanged(data: dependencyObservable.PropertyChangeData) {
     var bar = <ListView>data.object;
     if (!bar.ios) {
@@ -163,7 +193,6 @@ export class ListView extends common.ListView {
         this._ios.registerClassForCellReuseIdentifier(ListViewCell.class(), CELLIDENTIFIER);
         this._ios.autoresizingMask = UIViewAutoresizing.UIViewAutoresizingNone;
         this._ios.estimatedRowHeight = DEFAULT_HEIGHT;
-
         this._ios.dataSource = this._dataSource = DataSource.initWithOwner(new WeakRef(this));
         this._delegate = UITableViewDelegateImpl.initWithOwner(new WeakRef(this));
         this._heights = new Array<number>();
@@ -212,6 +241,23 @@ export class ListView extends common.ListView {
         this._heights[index] = value;
     }
 
+    public _onRowHeightPropertyChanged(data: dependencyObservable.PropertyChangeData) {
+        if (data.newValue < 0) {
+            this._nativeView.rowHeight = UITableViewAutomaticDimension;
+            this._nativeView.estimatedRowHeight = DEFAULT_HEIGHT;
+            this._delegate = UITableViewDelegateImpl.initWithOwner(new WeakRef(this));
+        }
+        else {
+            this._nativeView.rowHeight = data.newValue;
+            this._nativeView.estimatedRowHeight = data.newValue;
+            this._delegate = UITableViewRowHeightDelegateImpl.initWithOwner(new WeakRef(this));
+        }
+        if (this.isLoaded) {
+            this._nativeView.delegate = this._delegate;
+        }
+        super._onRowHeightPropertyChanged(data);
+    }
+
     public requestLayout(): void {
         // When preparing cell don't call super - no need to invalidate our measure when cell desiredSize is changed.
         if (!this._preparingCell) {