Emoji Support for all user input

All text that can be generated by users will show emoji from the
shipped sprites.

For all messages and posts, the custom emoji keyboard is now available.

This also disables menu actions rather than hiding them and thus
closes #677

Included is a fix for a regression that was not showing the keyboard
automatically in forums and thus
closes #676

briar-android/src/org/briarproject/android/view/LargeTextInputView.java

@@ -0,0 +1,77 @@
+package org.briarproject.android.view;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.support.annotation.Nullable;
+import android.support.annotation.UiThread;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.LinearLayout;
+
+import org.briarproject.R;
+
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+
+@UiThread
+public class LargeTextInputView extends TextInputView {
+
+	public LargeTextInputView(Context context) {
+		this(context, null);
+	}
+
+	public LargeTextInputView(Context context, @Nullable AttributeSet attrs) {
+		this(context, attrs, 0);
+	}
+
+	public LargeTextInputView(Context context, @Nullable AttributeSet attrs,
+			int defStyleAttr) {
+		super(context, attrs, defStyleAttr);
+	}
+
+	@Override
+	protected void inflateLayout(Context context) {
+		LayoutInflater inflater = (LayoutInflater) context
+				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+		inflater.inflate(R.layout.text_input_view_large, this, true);
+	}
+
+	@Override
+	protected void setUpViews(Context context, @Nullable AttributeSet attrs) {
+		super.setUpViews(context, attrs);
+
+		// get attributes
+		TypedArray attributes = context.obtainStyledAttributes(attrs,
+				R.styleable.LargeTextInputView);
+		String buttonText =
+				attributes.getString(R.styleable.LargeTextInputView_buttonText);
+		int maxLines =
+				attributes
+						.getInteger(R.styleable.LargeTextInputView_maxLines, 0);
+		boolean fillHeight = attributes
+				.getBoolean(R.styleable.LargeTextInputView_fillHeight,
+						false);
+		attributes.recycle();
+
+		if (buttonText != null) setButtonText(buttonText);
+		if (maxLines > 0) ui.editText.setMaxLines(maxLines);
+		if (fillHeight) {
+			LinearLayout layout =
+					(LinearLayout) findViewById(R.id.input_layout);
+			LayoutParams params = (LayoutParams) layout.getLayoutParams();
+			params.height = 0;
+			params.weight = 1;
+			layout.setLayoutParams(params);
+			ViewGroup.LayoutParams editParams = ui.editText.getLayoutParams();
+			editParams.height = MATCH_PARENT;
+			ui.editText.setLayoutParams(editParams);
+		}
+	}
+
+	public void setButtonText(String text) {
+		((Button) ui.sendButton).setText(text);
+	}
+
+}