new bookmark screen part 2
specs here: https://docs.google.com/a/google.com/present/edit?id=0ARMpWryWB2oaY2RkbmZwdnBfODc0Y2diYnBoNDc&hl=en
moved tabs to top
added bread crumbs view for folder hierarchy
changed thumbnail sizes for xlarge screens
Change-Id: I3035f299b343f9aa1ec0dd41772e5594cd6b21f5
diff --git a/src/com/android/browser/BreadCrumbView.java b/src/com/android/browser/BreadCrumbView.java
new file mode 100644
index 0000000..d2a50c9
--- /dev/null
+++ b/src/com/android/browser/BreadCrumbView.java
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.browser;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.Gravity;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Simple bread crumb view
+ * Use setController to receive callbacks from user interactions
+ * Use pushView, popView, clear, and getTopData to change/access the view stack
+ */
+public class BreadCrumbView extends LinearLayout implements OnClickListener {
+
+ interface Controller {
+ public void onTop(int level, Object data);
+ }
+
+ private ImageButton mBackButton;
+ private Controller mController;
+ private List<Crumb> mCrumbs;
+ private boolean mUseBackButton;
+
+ /**
+ * @param context
+ * @param attrs
+ * @param defStyle
+ */
+ public BreadCrumbView(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ init(context);
+ }
+
+ /**
+ * @param context
+ * @param attrs
+ */
+ public BreadCrumbView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ init(context);
+ }
+
+ /**
+ * @param context
+ */
+ public BreadCrumbView(Context context) {
+ super(context);
+ init(context);
+ }
+
+ private void init(Context ctx) {
+ mUseBackButton = false;
+ mCrumbs = new ArrayList<Crumb>();
+ }
+
+ public void setUseBackButton(boolean useflag) {
+ mUseBackButton = useflag;
+ if (mUseBackButton && (mBackButton == null)) {
+ addBackButton();
+ } else if (!mUseBackButton && (mBackButton != null)) {
+ removeView(mBackButton);
+ mBackButton = null;
+ }
+ }
+
+ public void setController(Controller ctl) {
+ mController = ctl;
+ }
+
+ public Object getTopData() {
+ Crumb c = getTopCrumb();
+ if (c != null) {
+ return c.data;
+ }
+ return null;
+ }
+
+ public int size() {
+ return mCrumbs.size();
+ }
+
+ public void clear() {
+ while (mCrumbs.size() > 1) {
+ pop(false);
+ }
+ pop(true);
+ }
+
+ public void notifyController() {
+ if (mController != null) {
+ if (mCrumbs.size() > 0) {
+ mController.onTop(mCrumbs.size(), getTopCrumb().data);
+ } else {
+ mController.onTop(0, null);
+ }
+ }
+ }
+
+ public void pushView(String name, Object data) {
+ Crumb crumb = new Crumb(name, true, data);
+ pushCrumb(crumb);
+ }
+
+ public void pushView(View view, Object data) {
+ Crumb crumb = new Crumb(view, true, data);
+ pushCrumb(crumb);
+ }
+
+ public void popView() {
+ pop(true);
+ }
+
+ private void addBackButton() {
+ mBackButton = new ImageButton(mContext);
+ mBackButton.setImageResource(R.drawable.ic_back_normal);
+ mBackButton.setBackgroundResource(R.drawable.browserbarbutton);
+ mBackButton.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
+ LayoutParams.MATCH_PARENT));
+ mBackButton.setOnClickListener(this);
+ mBackButton.setVisibility(View.GONE);
+ addView(mBackButton, 0);
+ }
+
+ private void pushCrumb(Crumb crumb) {
+ if (!mUseBackButton || (mCrumbs.size() > 0)) {
+ addSeparator();
+ }
+ mCrumbs.add(crumb);
+ addView(crumb.crumbView);
+ if (mUseBackButton) {
+ mBackButton.setVisibility(crumb.canGoBack ? View.VISIBLE : View.GONE);
+ }
+ crumb.crumbView.setOnClickListener(this);
+ }
+
+ private void addSeparator() {
+ ImageView sep = new ImageView(mContext);
+ sep.setImageResource(R.drawable.crumb_divider);
+ sep.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
+ LayoutParams.MATCH_PARENT));
+ addView(sep);
+ }
+
+ private void pop(boolean notify) {
+ int n = mCrumbs.size();
+ if (n > 0) {
+ removeLastView();
+ if (!mUseBackButton || (n > 1)) {
+ // remove separator
+ removeLastView();
+ }
+ mCrumbs.remove(n - 1);
+ if (mUseBackButton) {
+ Crumb top = getTopCrumb();
+ if (top != null) {
+ mBackButton.setVisibility(top.canGoBack ? View.VISIBLE : View.GONE);
+ } else {
+ mBackButton.setVisibility(View.GONE);
+ }
+ }
+ if (notify) {
+ notifyController();
+ }
+ }
+ }
+
+ private void removeLastView() {
+ int ix = getChildCount();
+ if (ix > 0) {
+ removeViewAt(ix-1);
+ }
+ }
+
+ private Crumb getTopCrumb() {
+ Crumb crumb = null;
+ if (mCrumbs.size() > 0) {
+ crumb = mCrumbs.get(mCrumbs.size() - 1);
+ }
+ return crumb;
+ }
+
+ @Override
+ public void onClick(View v) {
+ if (mBackButton == v) {
+ popView();
+ notifyController();
+ } else {
+ // pop until view matches crumb view
+ while (v != getTopCrumb().crumbView) {
+ pop(false);
+ }
+ notifyController();
+ }
+ }
+
+ class Crumb {
+
+ public View crumbView;
+ public boolean canGoBack;
+ public Object data;
+
+ public Crumb(String title, boolean backEnabled, Object tag) {
+ init(makeCrumbView(title), backEnabled, tag);
+ }
+
+ public Crumb(View view, boolean backEnabled, Object tag) {
+ init(view, backEnabled, tag);
+ }
+
+ private void init(View view, boolean back, Object tag) {
+ canGoBack = back;
+ crumbView = view;
+ data = tag;
+ }
+
+ private TextView makeCrumbView(String name) {
+ TextView tv = new TextView(mContext);
+ tv.setTextAppearance(mContext, android.R.style.TextAppearance_Medium);
+ tv.setPadding(16, 0, 16, 0);
+ tv.setGravity(Gravity.CENTER_VERTICAL);
+ tv.setText(name);
+ tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
+ LayoutParams.MATCH_PARENT));
+ return tv;
+ }
+
+ }
+
+}