Migrate settings to PreferenceFragmentCompat

Includes code from https://github.com/consp1racy/android-support-preference License: Apache License v2.0
2026-02-14 03:39:05 +01:00 · 2016-01-20 23:33:53 +00:00
parent e458853f34
commit 770d9ddc5f
12 changed files with 485 additions and 281 deletions
--- a/briar-android/src/org/briarproject/android/widget/PreferenceDividerDecoration.java
+++ b/briar-android/src/org/briarproject/android/widget/PreferenceDividerDecoration.java
@@ -0,0 +1,181 @@
+package org.briarproject.android.widget;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.DimenRes;
+import android.support.annotation.DrawableRes;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceCategory;
+import android.support.v7.preference.PreferenceGroup;
+import android.support.v7.preference.PreferenceGroupAdapter;
+import android.support.v7.preference.PreferenceScreen;
+import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.TintTypedArray;
+import android.view.View;
+
+import org.briarproject.R;
+
+/**
+ * Use this class to add dividers between {@link Preference} items.
+ * <p/>
+ * Source: https://github.com/consp1racy/android-support-preference
+ * <br/>
+ * License: Apache License v2.0
+ */
+public class PreferenceDividerDecoration extends RecyclerView.ItemDecoration {
+
+	private boolean mDrawTop = false;
+	private boolean mDrawBottom = false;
+	private boolean mDrawBetweenItems = true;
+	private boolean mDrawBetweenCategories = true;
+
+	private Drawable mDivider;
+	private int mDividerHeight;
+
+	public PreferenceDividerDecoration(Drawable divider, int dividerHeight) {
+		mDivider = divider;
+		mDividerHeight = dividerHeight;
+	}
+
+	public PreferenceDividerDecoration(Context context, @DrawableRes int divider, @DimenRes int dividerHeight) {
+		mDivider = ContextCompat.getDrawable(context, divider);
+		mDividerHeight = context.getResources().getDimensionPixelSize(dividerHeight);
+	}
+
+	public PreferenceDividerDecoration(Context context) {
+		TintTypedArray a = TintTypedArray.obtainStyledAttributes(context, null,
+				new int[] {R.attr.dividerHorizontal});
+		mDivider = a.getDrawable(0);
+		a.recycle();
+
+		mDividerHeight = mDivider.getIntrinsicHeight();
+	}
+
+	public boolean getDrawTop() {
+		return mDrawTop;
+	}
+
+	/**
+	 * Controls whether to draw divider above the first item.
+	 *
+	 * @param drawTop
+	 * @return
+	 */
+	public PreferenceDividerDecoration drawTop(boolean drawTop) {
+		mDrawTop = drawTop;
+		return this;
+	}
+
+	public boolean getDrawBottom() {
+		return mDrawBottom;
+	}
+
+	/**
+	 * Controls whether to draw divider at the bottom of the last item.
+	 *
+	 * @param drawBottom
+	 * @return
+	 */
+	public PreferenceDividerDecoration drawBottom(boolean drawBottom) {
+		mDrawBottom = drawBottom;
+		return this;
+	}
+
+	public boolean getDrawBetweenItems() {
+		return mDrawBetweenItems;
+	}
+
+	/**
+	 * Controls whether to draw divider at the bottom of each {@link Preference} and {@link PreferenceScreen} item.
+	 *
+	 * @param drawBetweenItems
+	 * @return
+	 */
+	public PreferenceDividerDecoration drawBetweenItems(boolean drawBetweenItems) {
+		mDrawBetweenItems = drawBetweenItems;
+		return this;
+	}
+
+	public boolean getDrawBetweenCategories() {
+		return mDrawBetweenCategories;
+	}
+
+	/**
+	 * Controls whether to draw divider above each {@link PreferenceGroup} usually {@link PreferenceCategory}.
+	 *
+	 * @param drawBetweenCategories
+	 * @return
+	 */
+	public PreferenceDividerDecoration drawBetweenCategories(boolean drawBetweenCategories) {
+		mDrawBetweenCategories = drawBetweenCategories;
+		return this;
+	}
+
+	@Override
+	public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
+		int left = parent.getPaddingLeft();
+		int right = parent.getWidth() - parent.getPaddingRight();
+
+		final PreferenceGroupAdapter adapter = (PreferenceGroupAdapter) parent.getAdapter();
+		final int adapterCount = adapter.getItemCount();
+
+		boolean wasLastPreferenceGroup = false;
+		for (int i = 0, childCount = parent.getChildCount(); i < childCount; i++) {
+			final View child = parent.getChildAt(i);
+
+			final int adapterPosition = parent.getChildAdapterPosition(child);
+			Preference preference = adapter.getItem(adapterPosition);
+
+			boolean skipNextAboveDivider = false;
+			if (adapterPosition == 0) {
+				if (mDrawTop) {
+					drawAbove(c, left, right, child);
+				}
+				skipNextAboveDivider = true;
+			}
+
+			if (preference instanceof PreferenceGroup
+					&& !(preference instanceof PreferenceScreen)) {
+				if (mDrawBetweenCategories) {
+					if (!skipNextAboveDivider) {
+						drawAbove(c, left, right, child);
+						skipNextAboveDivider = true;
+					}
+				}
+				wasLastPreferenceGroup = true;
+			} else {
+				if (mDrawBetweenItems && !wasLastPreferenceGroup) {
+					if (!skipNextAboveDivider) {
+						drawAbove(c, left, right, child);
+						skipNextAboveDivider = true;
+					}
+				}
+				wasLastPreferenceGroup = false;
+			}
+
+			if (adapterPosition == adapterCount - 1) {
+				if (mDrawBottom) {
+					drawBottom(c, left, right, child);
+				}
+			}
+		}
+	}
+
+	private void drawAbove(Canvas c, int left, int right, View child) {
+		final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
+		final int top = child.getTop() - params.topMargin - mDividerHeight;
+		final int bottom = top + mDividerHeight;
+		mDivider.setBounds(left, top, right, bottom);
+		mDivider.draw(c);
+	}
+
+	private void drawBottom(Canvas c, int left, int right, View child) {
+		final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
+		final int top = child.getBottom() + params.bottomMargin - mDividerHeight;
+		final int bottom = top + mDividerHeight;
+		mDivider.setBounds(left, top, right, bottom);
+		mDivider.draw(c);
+	}
+}