1package io.ionic.keyboard;
  2
  3import org.apache.cordova.CallbackContext;
  4import org.apache.cordova.CordovaInterface;
  5import org.apache.cordova.CordovaPlugin;
  6import org.apache.cordova.CordovaWebView;
  7import org.apache.cordova.PluginResult;
  8import org.apache.cordova.PluginResult.Status;
  9import org.json.JSONArray;
 10import org.json.JSONException;
 11
 12import android.content.Context;
 13import android.graphics.Rect;
 14import android.util.DisplayMetrics;
 15import android.view.View;
 16import android.view.ViewTreeObserver.OnGlobalLayoutListener;
 17import android.view.inputmethod.InputMethodManager;
 18
 19// import additionally required classes for calculating screen height
 20import android.view.Display;
 21import android.graphics.Point;
 22import android.os.Build;
 23
 24public class IonicKeyboard extends CordovaPlugin {
 25
 26    public void initialize(CordovaInterface cordova, CordovaWebView webView) {
 27        super.initialize(cordova, webView);
 28    }
 29
 30    public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) throws JSONException {
 31        if ("close".equals(action)) {
 32            cordova.getThreadPool().execute(new Runnable() {
 33                public void run() {
 34                    //http://stackoverflow.com/a/7696791/1091751
 35                    InputMethodManager inputManager = (InputMethodManager) cordova.getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
 36                    View v = cordova.getActivity().getCurrentFocus();
 37
 38                    if (v == null) {
 39                        callbackContext.error("No current focus");
 40                    } else {
 41                        inputManager.hideSoftInputFromWindow(v.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
 42                        callbackContext.success(); // Thread-safe.
 43                    }
 44                }
 45            });
 46            return true;
 47        }
 48        if ("show".equals(action)) {
 49            cordova.getThreadPool().execute(new Runnable() {
 50                public void run() {
 51                    ((InputMethodManager) cordova.getActivity().getSystemService(Context.INPUT_METHOD_SERVICE)).toggleSoftInput(0, InputMethodManager.HIDE_IMPLICIT_ONLY);
 52                    callbackContext.success(); // Thread-safe.
 53                }
 54            });
 55            return true;
 56        }
 57        if ("init".equals(action)) {
 58            cordova.getThreadPool().execute(new Runnable() {
 59                public void run() {
 60                	//calculate density-independent pixels (dp)
 61                    //http://developer.android.com/guide/practices/screens_support.html
 62                    DisplayMetrics dm = new DisplayMetrics();
 63                    cordova.getActivity().getWindowManager().getDefaultDisplay().getMetrics(dm);
 64                    final float density = dm.density;
 65
 66                    //http://stackoverflow.com/a/4737265/1091751 detect if keyboard is showing
 67                    final View rootView = cordova.getActivity().getWindow().getDecorView().findViewById(android.R.id.content).getRootView();
 68                    OnGlobalLayoutListener list = new OnGlobalLayoutListener() {
 69                        int previousHeightDiff = 0;
 70                        @Override
 71                        public void onGlobalLayout() {
 72                            Rect r = new Rect();
 73                            //r will be populated with the coordinates of your view that area still visible.
 74                            rootView.getWindowVisibleDisplayFrame(r);
 75
 76                            PluginResult result;
 77
 78                            // cache properties for later use
 79                            int rootViewHeight = rootView.getRootView().getHeight();
 80                            int resultBottom = r.bottom;
 81
 82                            // calculate screen height differently for android versions >= 21: Lollipop 5.x, Marshmallow 6.x
 83                            //http://stackoverflow.com/a/29257533/3642890 beware of nexus 5
 84                            int screenHeight;
 85
 86                            if (Build.VERSION.SDK_INT >= 21) {
 87                                Display display = cordova.getActivity().getWindowManager().getDefaultDisplay();
 88                                Point size = new Point();
 89                                display.getSize(size);
 90                                screenHeight = size.y;
 91                            } else {
 92                                screenHeight = rootViewHeight;
 93                            }
 94
 95                            int heightDiff = screenHeight - resultBottom;
 96
 97                            int pixelHeightDiff = (int)(heightDiff / density);
 98                            if (pixelHeightDiff > 100 && pixelHeightDiff != previousHeightDiff) { // if more than 100 pixels, its probably a keyboard...
 99                                String msg = "S" + Integer.toString(pixelHeightDiff);
100                                result = new PluginResult(PluginResult.Status.OK, msg);
101                                result.setKeepCallback(true);
102                                callbackContext.sendPluginResult(result);
103                            }
104                            else if ( pixelHeightDiff != previousHeightDiff && ( previousHeightDiff - pixelHeightDiff ) > 100 ){
105                            	String msg = "H";
106                                result = new PluginResult(PluginResult.Status.OK, msg);
107                                result.setKeepCallback(true);
108                                callbackContext.sendPluginResult(result);
109                            }
110                            previousHeightDiff = pixelHeightDiff;
111                         }
112                    };
113
114                    rootView.getViewTreeObserver().addOnGlobalLayoutListener(list);
115
116
117                    PluginResult dataResult = new PluginResult(PluginResult.Status.OK);
118                    dataResult.setKeepCallback(true);
119                    callbackContext.sendPluginResult(dataResult);
120                }
121            });
122            return true;
123        }
124        return false;  // Returning false results in a "MethodNotFound" error.
125    }
126
127
128}
129
130