Implemented time fields

app/src/main/java/com/philliphsu/clock2/edittimer/EditTimerActivity.java

@@ -3,31 +3,40 @@ package com.philliphsu.clock2.edittimer;
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v7.widget.GridLayout;
-import android.widget.Button;
-import android.widget.ImageButton;
-import android.widget.ProgressBar;
+import android.text.InputType;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
 import android.widget.TextView;
 
 import com.philliphsu.clock2.BaseActivity;
 import com.philliphsu.clock2.R;
 
 import butterknife.Bind;
+import butterknife.OnClick;
+import butterknife.OnLongClick;
+import butterknife.OnTouch;
 
 public class EditTimerActivity extends BaseActivity {
+    private static final int FIELD_LENGTH = 2;
 
+    private final int[] mInput = new int[6];
+    private int mCursorAt;
+
+    @Bind(R.id.appbar) ViewGroup mAppBar;
     @Bind(R.id.label) TextView mLabel;
-    @Bind(R.id.duration) TextView mDuration; // TODO: Change to something suitable for input fields
-    @Bind(R.id.add_one_minute) ImageButton mAddOneMinute;
+    @Bind(R.id.hour) EditText mHour;
+    @Bind(R.id.minute) EditText mMinute;
+    @Bind(R.id.second) EditText mSecond;
+    @Bind(R.id.hour_label) TextView mHourLabel;
+    @Bind(R.id.minute_label) TextView mMinuteLabel;
+    @Bind(R.id.second_label) TextView mSecondLabel;
+    @Bind(R.id.focus_grabber) View mFocusGrabber;
     @Bind(R.id.fab) FloatingActionButton mFab;
-    @Bind(R.id.stop) ImageButton mStop;
-    // TODO: Consider making an abstract EditItemActivity.
-    // Define these buttons in a layout file that subclasses can include
-    // into their own activity layouts. Bind OnClick listeners to abstract
-    // protected methods deleteItem() and saveItem().
-    @Bind(R.id.delete) Button mDelete;
-    @Bind(R.id.save) Button mSave;
-    @Bind(R.id.numpad) GridLayout mNumpad; // TODO: Actual numpad type
-    @Bind(R.id.progress_bar) ProgressBar mProgressBar;
+    // Intentionally not using a (subclass of) GridLayoutNumpad, because
+    // it is expedient to refrain from adapting it for timers.
+    @Bind(R.id.numpad) GridLayout mNumpad;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -41,6 +50,91 @@ public class EditTimerActivity extends BaseActivity {
 
     @Override
     protected int menuResId() {
+        // TODO: Define a menu res with a save item
         return 0;
     }
+
+    @OnClick({ R.id.zero, R.id.one, R.id.two, R.id.three, R.id.four,
+            R.id.five, R.id.six, R.id.seven, R.id.eight, R.id.nine })
+    void onClick(TextView view) {
+        if (mFocusGrabber.isFocused())
+            return;
+        EditText field = getFocusedField();
+        int at = field.getSelectionStart();
+        field.getText().replace(at, at + 1, view.getText());
+        field.setSelection(at + 1);
+        if (field.getSelectionStart() == FIELD_LENGTH) {
+            // At the end of the current field, so try to focus to the next field.
+            // The search will return null if no view can be focused next.
+            View next = field.focusSearch(View.FOCUS_RIGHT);
+            if (next != null) {
+                next.requestFocus();
+                if (next instanceof EditText) {
+                    // Should always start off at the beginning of the field
+                    ((EditText) next).setSelection(0);
+                }
+            }
+        }
+    }
+
+    @OnTouch({ R.id.hour, R.id.minute, R.id.second })
+    boolean captureTouchEvent(EditText field, MotionEvent event) {
+        int inType = field.getInputType(); // backup the input type
+        field.setInputType(InputType.TYPE_NULL); // disable soft input
+        boolean result = field.onTouchEvent(event); // call native handler
+        field.setInputType(inType); // restore input type (to show cursor)
+        return result;
+    }
+
+    @OnClick(R.id.backspace)
+    void backspace() {
+        if (mFocusGrabber.isFocused()) {
+            mAppBar.focusSearch(mFocusGrabber, View.FOCUS_LEFT).requestFocus();
+        }
+        EditText field = getFocusedField();
+        if (field == null)
+            return;
+        int at = field.getSelectionStart();
+        if (at == 0) {
+            // At the beginning of current field, so move focus
+            // to the preceding field
+            View prev = field.focusSearch(View.FOCUS_LEFT);
+            if (null == prev) {
+                // Reached the beginning of the hours field
+                return;
+            }
+            if (prev.requestFocus()) {
+                if (prev instanceof EditText) {
+                    // Always move the cursor to the end when moving focus back
+                    ((EditText) prev).setSelection(FIELD_LENGTH);
+                }
+                // Recursively backspace on the newly focused field
+                backspace();
+            }
+        } else {
+            field.getText().replace(at - 1, at, "0");
+            field.setSelection(at - 1);
+        }
+    }
+    
+    @OnLongClick(R.id.backspace)
+    boolean clear() {
+        mHour.setText("00");
+        mMinute.setText("00");
+        mSecond.setText("00");
+        mHour.requestFocus(); // TOneverDO: call after setSelection(0), or else the cursor returns to the end of the text
+        mHour.setSelection(0); // always move the cursor WHILE the field is focused, NEVER focus after!
+        mMinute.setSelection(0);
+        mSecond.setSelection(0);
+        return true;
+    }
+
+    @OnClick(R.id.label)
+    void openEditLabelDialog() {
+        // TODO: Show the edit label alert dialog.
+    }
+
+    public final EditText getFocusedField() {
+        return (EditText) mAppBar.findFocus();
+    }
 }