pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/base/java/org/mozilla/gecko/FindInPageBar.java

@@ -0,0 +1,256 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+import org.mozilla.gecko.util.GeckoEventListener;
+import org.mozilla.gecko.util.GeckoRequest;
+import org.mozilla.gecko.util.NativeJSObject;
+import org.mozilla.gecko.util.ThreadUtils;
+
+import org.json.JSONObject;
+
+import android.content.Context;
+import android.text.Editable;
+import android.text.TextUtils;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+public class FindInPageBar extends LinearLayout implements TextWatcher, View.OnClickListener, GeckoEventListener  {
+    private static final String LOGTAG = "GeckoFindInPageBar";
+    private static final String REQUEST_ID = "FindInPageBar";
+
+    private final Context mContext;
+    private CustomEditText mFindText;
+    private TextView mStatusText;
+    private boolean mInflated;
+
+    public FindInPageBar(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mContext = context;
+        setFocusable(true);
+    }
+
+    public void inflateContent() {
+        LayoutInflater inflater = LayoutInflater.from(mContext);
+        View content = inflater.inflate(R.layout.find_in_page_content, this);
+
+        content.findViewById(R.id.find_prev).setOnClickListener(this);
+        content.findViewById(R.id.find_next).setOnClickListener(this);
+        content.findViewById(R.id.find_close).setOnClickListener(this);
+
+        // Capture clicks on the rest of the view to prevent them from
+        // leaking into other views positioned below.
+        content.setOnClickListener(this);
+
+        mFindText = (CustomEditText) content.findViewById(R.id.find_text);
+        mFindText.addTextChangedListener(this);
+        mFindText.setOnKeyPreImeListener(new CustomEditText.OnKeyPreImeListener() {
+            @Override
+            public boolean onKeyPreIme(View v, int keyCode, KeyEvent event) {
+                if (keyCode == KeyEvent.KEYCODE_BACK) {
+                    hide();
+                    return true;
+                }
+                return false;
+            }
+        });
+
+        mStatusText = (TextView) content.findViewById(R.id.find_status);
+
+        mInflated = true;
+        GeckoApp.getEventDispatcher().registerGeckoThreadListener(this,
+            "FindInPage:MatchesCountResult",
+            "TextSelection:Data");
+    }
+
+    public void show() {
+        if (!mInflated)
+            inflateContent();
+
+        setVisibility(VISIBLE);
+        mFindText.requestFocus();
+
+        // handleMessage() receives response message and determines initial state of softInput
+        GeckoAppShell.notifyObservers("TextSelection:Get", REQUEST_ID);
+        GeckoAppShell.notifyObservers("FindInPage:Opened", null);
+    }
+
+    public void hide() {
+        if (!mInflated || getVisibility() == View.GONE) {
+            // There's nothing to hide yet.
+            return;
+        }
+
+        // Always clear the Find string, primarily for privacy.
+        mFindText.setText("");
+
+        // Only close the IMM if its EditText is the one with focus.
+        if (mFindText.isFocused()) {
+          getInputMethodManager(mFindText).hideSoftInputFromWindow(mFindText.getWindowToken(), 0);
+        }
+
+        // Close the FIPB / FindHelper state.
+        setVisibility(GONE);
+        GeckoAppShell.notifyObservers("FindInPage:Closed", null);
+    }
+
+    private InputMethodManager getInputMethodManager(View view) {
+        Context context = view.getContext();
+        return (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
+     }
+
+    public void onDestroy() {
+        if (!mInflated) {
+            return;
+        }
+        GeckoApp.getEventDispatcher().unregisterGeckoThreadListener(this,
+            "FindInPage:MatchesCountResult",
+            "TextSelection:Data");
+    }
+
+    private void onMatchesCountResult(final int total, final int current, final int limit, final String searchString) {
+        if (total == -1) {
+            updateResult(Integer.toString(limit) + "+");
+        } else if (total > 0) {
+            updateResult(Integer.toString(current) + "/" + Integer.toString(total));
+        } else if (TextUtils.isEmpty(searchString)) {
+            updateResult("");
+        } else {
+            // We display 0/0, when there were no
+            // matches found, or if matching has been turned off by setting
+            // pref accessibility.typeaheadfind.matchesCountLimit to 0.
+            updateResult("0/0");
+        }
+    }
+
+    private void updateResult(final String statusText) {
+        ThreadUtils.postToUiThread(new Runnable() {
+            @Override
+            public void run() {
+                mStatusText.setVisibility(statusText.isEmpty() ? View.GONE : View.VISIBLE);
+                mStatusText.setText(statusText);
+            }
+        });
+    }
+
+    // TextWatcher implementation
+
+    @Override
+    public void afterTextChanged(Editable s) {
+        sendRequestToFinderHelper("FindInPage:Find", s.toString());
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+        // ignore
+    }
+
+    @Override
+    public void onTextChanged(CharSequence s, int start, int before, int count) {
+        // ignore
+    }
+
+    // View.OnClickListener implementation
+
+    @Override
+    public void onClick(View v) {
+        final int viewId = v.getId();
+
+        String extras = getResources().getResourceEntryName(viewId);
+        Telemetry.sendUIEvent(TelemetryContract.Event.ACTION, TelemetryContract.Method.BUTTON, extras);
+
+        if (viewId == R.id.find_prev) {
+            sendRequestToFinderHelper("FindInPage:Prev", mFindText.getText().toString());
+            getInputMethodManager(mFindText).hideSoftInputFromWindow(mFindText.getWindowToken(), 0);
+            return;
+        }
+
+        if (viewId == R.id.find_next) {
+            sendRequestToFinderHelper("FindInPage:Next", mFindText.getText().toString());
+            getInputMethodManager(mFindText).hideSoftInputFromWindow(mFindText.getWindowToken(), 0);
+            return;
+        }
+
+        if (viewId == R.id.find_close) {
+            hide();
+        }
+    }
+
+    // GeckoEventListener implementation
+
+    @Override
+    public void handleMessage(String event, JSONObject message) {
+        if (event.equals("FindInPage:MatchesCountResult")) {
+            onMatchesCountResult(message.optInt("total", 0),
+                message.optInt("current", 0),
+                message.optInt("limit", 0),
+                message.optString("searchString"));
+            return;
+        }
+
+        if (!event.equals("TextSelection:Data") || !REQUEST_ID.equals(message.optString("requestId"))) {
+            return;
+        }
+
+        final String text = message.optString("text");
+
+        // Populate an initial find string, virtual keyboard not required.
+        if (!TextUtils.isEmpty(text)) {
+            // Populate initial selection
+            ThreadUtils.postToUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    mFindText.setText(text);
+                }
+            });
+            return;
+        }
+
+        // Show the virtual keyboard.
+        if (mFindText.hasWindowFocus()) {
+            getInputMethodManager(mFindText).showSoftInput(mFindText, 0);
+        } else {
+            // showSoftInput won't work until after the window is focused.
+            mFindText.setOnWindowFocusChangeListener(new CustomEditText.OnWindowFocusChangeListener() {
+                @Override
+                public void onWindowFocusChanged(boolean hasFocus) {
+                    if (!hasFocus)
+                        return;
+
+                    mFindText.setOnWindowFocusChangeListener(null);
+                    getInputMethodManager(mFindText).showSoftInput(mFindText, 0);
+               }
+            });
+        }
+    }
+
+    /**
+     * Request find operation, and update matchCount results (current count and total).
+     */
+    private void sendRequestToFinderHelper(final String request, final String searchString) {
+        GeckoAppShell.sendRequestToGecko(new GeckoRequest(request, searchString) {
+            @Override
+            public void onResponse(NativeJSObject nativeJSObject) {
+                // We don't care about the return value, because `onMatchesCountResult`
+                // does the heavy lifting.
+            }
+
+            @Override
+            public void onError(NativeJSObject error) {
+                // Gecko didn't respond due to state change, javascript error, etc.
+                Log.d(LOGTAG, "No response from Gecko on request to match string: [" +
+                    searchString + "]");
+                updateResult("");
+            }
+        });
+    }
+}