b/5233576 Fixed the problem where long desc are not showing

Change-Id: Ic12e5e0158021996d0b3822803a4dad8fb10d904

1 files changed, 124 insertions, 0 deletions

diff --git a/src/com/android/calendar/ExpandableTextView.java b/src/com/android/calendar/ExpandableTextView.java
new file mode 100644
index 00000000..026e3dee
--- /dev/null
+++ b/src/com/android/calendar/ExpandableTextView.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2011 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.calendar;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.ImageButton;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+public class ExpandableTextView extends LinearLayout implements OnClickListener {
+
+    TextView mTv;
+    ImageButton mButton; // Button to expand/collapse
+
+    private boolean mRelayout = false;
+    private boolean mCollapsed = true; // Show short version as default.
+    private int mMaxCollapsedLines = 8; // The default number of lines;
+    private Drawable mExpandDrawable;
+    private Drawable mCollapseDrawable;
+
+    public ExpandableTextView(Context context) {
+        super(context);
+        init();
+    }
+
+    public ExpandableTextView(Context context, AttributeSet attrs) {
+        super(context, attrs, 0);
+        init();
+    }
+
+    public ExpandableTextView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init();
+    }
+
+    void init() {
+        mMaxCollapsedLines = getResources().getInteger((R.integer.event_info_desc_line_num));
+        mExpandDrawable = getResources().getDrawable(R.drawable.ic_expand_small_holo_light);
+        mCollapseDrawable = getResources().getDrawable(R.drawable.ic_collapse_small_holo_light);
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (mButton.getVisibility() != View.VISIBLE) {
+            return;
+        }
+
+        mCollapsed = !mCollapsed;
+        mButton.setImageDrawable(mCollapsed ? mExpandDrawable : mCollapseDrawable);
+        mTv.setMaxLines(mCollapsed ? mMaxCollapsedLines : Integer.MAX_VALUE);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        // If no change, measure and return
+        if (!mRelayout || getVisibility() == View.GONE) {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+            return;
+        }
+        mRelayout = false;
+
+        // Setup with optimistic case
+        // i.e. Everything fits. No button needed
+        mButton.setVisibility(View.GONE);
+        mTv.setMaxLines(Integer.MAX_VALUE);
+
+        // Measure
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+
+        // If the text fits in collapsed mode, we are done.
+        if (mTv.getLineCount() <= mMaxCollapsedLines) {
+            return;
+        }
+
+        // Doesn't fit in collapsed mode. Collapse text view as needed. Show
+        // button.
+        if (mCollapsed) {
+            mTv.setMaxLines(mMaxCollapsedLines);
+        }
+        mButton.setVisibility(View.VISIBLE);
+
+        // Re-measure with new setup
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+
+    private void findViews() {
+        mTv = (TextView) findViewById(R.id.expandable_text);
+        mTv.setOnClickListener(this);
+        mButton = (ImageButton) findViewById(R.id.expand_collapse);
+        mButton.setOnClickListener(this);
+    }
+
+    public void setText(String text) {
+        mRelayout = true;
+        if (mTv == null) {
+            findViews();
+        }
+        String trimmedText = text.trim();
+        mTv.setText(trimmedText);
+        this.setVisibility(trimmedText.length() == 0 ? View.GONE : View.VISIBLE);
+    }
+
+    public CharSequence getText() {
+        return mTv.getText();
+    }
+}