Fix device dpi handling in the Layout device parsing/UI.

Change-Id: I74fdf8c62a7b005e40e1817d9f39c59d8f99c070

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/configuration/ConfigEditDialog.java

@@ -50,8 +50,8 @@ public class ConfigEditDialog extends GridDialog {
 
     private String mDeviceName;
     private String mConfigName;
-    private float mXDpi = 0f;
+    private float mXDpi = Float.NaN;
-    private float mYDpi = 0f;
+    private float mYDpi = Float.NaN;
 
 
     public ConfigEditDialog(Shell parentShell, FolderConfiguration config) {
@@ -140,13 +140,18 @@ public class ConfigEditDialog extends GridDialog {
 
         final Text deviceXDpiText = new Text(deviceGroup, SWT.BORDER);
         deviceXDpiText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
-        if (mXDpi != 0f) {
+        if (Float.isNaN(mXDpi) == false) {
             deviceXDpiText.setText(String.format("%.1f", mXDpi)); //$NON-NLS-1$
         }
         deviceXDpiText.addVerifyListener(floatVerifier);
         deviceXDpiText.addModifyListener(new ModifyListener() {
             public void modifyText(ModifyEvent e) {
-                mXDpi = Float.parseFloat(deviceXDpiText.getText());
+                String value = deviceXDpiText.getText();
+                if (value.length() == 0) {
+                    mXDpi = Float.NaN;
+                } else {
+                    mXDpi = Float.parseFloat(value);
+                }
             }
         });
 
@@ -155,13 +160,18 @@ public class ConfigEditDialog extends GridDialog {
 
         final Text deviceYDpiText = new Text(deviceGroup, SWT.BORDER);
         deviceYDpiText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
-        if (mYDpi != 0f) {
+        if (Float.isNaN(mYDpi) == false) {
             deviceYDpiText.setText(String.format("%.1f", mYDpi)); //$NON-NLS-1$
         }
         deviceYDpiText.addVerifyListener(floatVerifier);
         deviceYDpiText.addModifyListener(new ModifyListener() {
             public void modifyText(ModifyEvent e) {
-                mYDpi = Float.parseFloat(deviceYDpiText.getText());
+                String value = deviceYDpiText.getText();
+                if (value.length() == 0) {
+                    mYDpi = Float.NaN;
+                } else {
+                    mYDpi = Float.parseFloat(value);
+                }
             }
         });
 
@@ -185,11 +195,10 @@ public class ConfigEditDialog extends GridDialog {
             }
         });
 
-        mConfigSelector = new ConfigurationSelector(configGroup);
+        mConfigSelector = new ConfigurationSelector(configGroup, true /*deviceMode*/);
         // configure the selector to be in "device mode" and not accept language/region/version
         // since those are selected from a different combo
         // FIXME: add version combo.
-        mConfigSelector.setDeviceMode(true);
         mConfigSelector.setQualifierFilter(new IQualifierFilter() {
             public boolean accept(ResourceQualifier qualifier) {
                 if (qualifier instanceof LanguageQualifier ||

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/configuration/ConfigManagerDialog.java

@@ -335,6 +335,8 @@ public class ConfigManagerDialog extends GridDialog {
                 DeviceSelection selection = getSelection();
                 ConfigEditDialog dlg = new ConfigEditDialog(parent.getShell(), null);
                 dlg.setDeviceName(selection.device.getName());
+                dlg.setXDpi(selection.device.getXDpi());
+                dlg.setYDpi(selection.device.getYDpi());
                 dlg.setConfigName(selection.entry.getKey());
                 dlg.setConfig(selection.entry.getValue());
 

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/configuration/LayoutCreatorDialog.java

@@ -69,7 +69,7 @@ public final class LayoutCreatorDialog extends GridDialog {
         new Label(parent, SWT.NONE).setText(
                 String.format("Configuration for the alternate version of %1$s", mFileName));
 
-        mSelector = new ConfigurationSelector(parent);
+        mSelector = new ConfigurationSelector(parent, false /*deviceMode*/);
         mSelector.setConfiguration(mConfig);
 
         // parent's layout is a GridLayout as specified in the javadoc.

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/refactorings/extractstring/ExtractStringInputPage.java

@@ -208,7 +208,7 @@ class ExtractStringInputPage extends UserInputWizardPage implements IWizardPage
         label = new Label(group, SWT.NONE);
         label.setText("&Configuration:");
 
-        mConfigSelector = new ConfigurationSelector(group);
+        mConfigSelector = new ConfigurationSelector(group, false /*deviceMode*/);
         GridData gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);
         gd.horizontalSpan = 2;
         gd.widthHint = ConfigurationSelector.WIDTH_HINT;

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/sdk/LayoutConfigsXsd.java

@@ -97,7 +97,7 @@ public class LayoutConfigsXsd {
     /** The screen-dimension element has 2 size element children. */
     public static final String NODE_SIZE = "size";                                  //$NON-NLS-1$
 
-    public static final String NODE_XPDI = "xdpi";                                  //$NON-NLS-1$
+    public static final String NODE_XDPI = "xdpi";                                  //$NON-NLS-1$
 
     public static final String NODE_YDPI = "ydpi";                                  //$NON-NLS-1$
 

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/sdk/LayoutDeviceHandler.java

@@ -154,6 +154,10 @@ class LayoutDeviceHandler extends DefaultHandler {
             if (qual != null) {
                 mCurrentConfig.setScreenDimensionQualifier(qual);
             }
+        } else if (LayoutConfigsXsd.NODE_XDPI.equals(localName)) {
+            mCurrentDevice.setXDpi(Float.parseFloat(mStringAccumulator.toString()));
+        } else if (LayoutConfigsXsd.NODE_YDPI.equals(localName)) {
+            mCurrentDevice.setYDpi(Float.parseFloat(mStringAccumulator.toString()));
         } else if (LayoutConfigsXsd.NODE_SIZE.equals(localName)) {
             if (mSize1 == null) {
                 mSize1 = mStringAccumulator.toString();

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/ui/ConfigurationSelector.java

@@ -109,8 +109,8 @@ public class ConfigurationSelector extends Composite {
 
     private final HashMap<Class<? extends ResourceQualifier>, QualifierEditBase> mUiMap =
         new HashMap<Class<? extends ResourceQualifier>, QualifierEditBase>();
+    private final boolean mDeviceMode;
     private Composite mQualifierEditParent;
-    private boolean mDeviceMode = false;
     private IQualifierFilter mQualifierFilter;
 
     /**
@@ -198,8 +198,20 @@ public class ConfigurationSelector extends Composite {
         boolean accept(ResourceQualifier qualifier);
     }
 
-    public ConfigurationSelector(Composite parent) {
+    /**
+     * Creates the selector.
+     *
+     * If the device mode is <code>true</code> then the configuration selector only
+     * allows to create configuration that are valid on a device (as opposed to resource
+     * configuration).
+     * For instance {@link Density#NODPI} is a valid qualifier for a resource configuration but
+     * this is not valid on a device.
+     * @param parent the composite parent.
+     * @param deviceMode the device mode.
+     */
+    public ConfigurationSelector(Composite parent, boolean deviceMode) {
         super(parent, SWT.NONE);
+        mDeviceMode  = deviceMode;
 
         mBaseConfiguration.createDefault();
 
@@ -388,19 +400,6 @@ public class ConfigurationSelector extends Composite {
         mUiMap.put(VersionQualifier.class, new VersionEdit(mQualifierEditParent));
     }
 
-    /**
-     * Sets the device mode. If <code>true</code> then the configuration selector only
-     * allows to create configuration that are valid on a device (as opposed to resource
-     * configuration).
-     * For instance {@link Density#NODPI} is a valid qualifier for a resource configuration but
-     * this is not valid on a device.
-     * Default is false.
-     * @param deviceMode the device mode.
-     */
-    public void setDeviceMode(boolean deviceMode) {
-        mDeviceMode  = deviceMode;
-    }
-
     /**
      * Sets a {@link IQualifierFilter}. If non null, this will restrict the qualifiers that
      * can be chosen.

tools/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/wizards/newxmlfile/NewXmlFileCreationPage.java

@@ -620,7 +620,7 @@ class NewXmlFileCreationPage extends WizardPage {
 
         // configuration selector
         emptyCell(parent);
-        mConfigSelector = new ConfigurationSelector(parent);
+        mConfigSelector = new ConfigurationSelector(parent, false /* deviceMode*/);
         GridData gd = newGridData(2, GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);
         gd.widthHint = ConfigurationSelector.WIDTH_HINT;
         gd.heightHint = ConfigurationSelector.HEIGHT_HINT;