mirror of https://github.com/moparisthebest/k-9
67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
package com.fsck.k9.view;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.util.AttributeSet;
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import android.widget.TextView;
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/**
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* This {@link TextView} is used in the custom view of the {@link com.fsck.k9.activity.MessageList}
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* action bar.
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* It will hide the subject line in {@link MessageHeader} if the subject fits completely into the
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* action bar's title view.
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*/
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public class MessageTitleView extends TextView {
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private static final int MAX_LINES = 2;
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private static final String ELLIPSIS = "\u2026";
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private MessageHeader mHeader;
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private boolean mNeedEllipsizeCheck = true;
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public MessageTitleView(Context context) {
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this(context, null);
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}
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public MessageTitleView(Context context, AttributeSet attrs) {
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this(context, attrs, android.R.attr.textViewStyle);
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}
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public MessageTitleView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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protected void onTextChanged(CharSequence text, int start,
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int lengthBefore, int lengthAfter) {
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super.onTextChanged(text, start, lengthBefore, lengthAfter);
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mNeedEllipsizeCheck = true;
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}
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/**
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* Check to see if we need to hide the subject line in {@link MessageHeader} or not.
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*/
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@Override
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public void onDraw(Canvas canvas) {
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/*
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* Android does not support ellipsize in combination with maxlines
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* for TextViews. To work around that, check for ourselves whether
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* the text is longer than MAX_LINES, and ellipsize manually.
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*/
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if (mNeedEllipsizeCheck) {
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if (getLayout() != null && mHeader != null) {
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if (getLayout().getLineCount() > MAX_LINES) {
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int lineEndIndex = getLayout().getLineEnd(MAX_LINES - 1);
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setText(getText().subSequence(0, lineEndIndex - 2) + ELLIPSIS);
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} else {
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mHeader.hideSubjectLine();
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}
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mNeedEllipsizeCheck = false;
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}
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}
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super.onDraw(canvas);
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}
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public void setMessageHeader(final MessageHeader header) {
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mHeader = header;
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}
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}
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