src/com/android/mail/compose/QuotedTextView.java - platform/packages/apps/UnifiedEmail - Gitiles

 /**
  * Copyright (c) 2011, Google Inc.
  *
  * 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.mail.compose;

 import android.content.Context;
 import android.content.res.Resources;
 import android.text.Html;
 import android.text.SpannedString;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.webkit.WebView;
 import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.LinearLayout;

 import com.android.mail.R;
 import com.android.mail.providers.Message;
 import com.android.mail.utils.Utils;
 import com.google.android.common.html.parser.HtmlDocument;
 import com.google.android.common.html.parser.HtmlParser;
 import com.google.android.common.html.parser.HtmlTreeBuilder;

 import java.text.DateFormat;
 import java.util.Date;

 /*
  * View for displaying the quoted text in the compose screen for a reply
  * or forward. A close button is included in the upper right to remove
  * the quoted text from the message.
  */
 class QuotedTextView extends LinearLayout implements OnClickListener {
     // HTML tags used to quote reply content
     // The following style must be in-sync with
     // pinto.app.MessageUtil.QUOTE_STYLE and
     // java/com/google/caribou/ui/pinto/modules/app/messageutil.js
     // BEG_QUOTE_BIDI is also available there when we support BIDI
     private static final String BLOCKQUOTE_BEGIN = "<blockquote class=\"quote\" style=\""
             + "margin:0 0 0 .8ex;" + "border-left:1px #ccc solid;" + "padding-left:1ex\">";
     private static final String BLOCKQUOTE_END = "</blockquote>";
     // HTML tags used to quote replies & forwards
     /* package for testing */static final String QUOTE_BEGIN = "<div class=\"quote\">";
     private static final String QUOTE_END = "</div>";

     // Separates the attribution headers (Subject, To, etc) from the body in
     // quoted text.
     private static final String HEADER_SEPARATOR = "<br type='attribution'>";
     private static final int HEADER_SEPARATOR_LENGTH = HEADER_SEPARATOR.length();

     private CharSequence mQuotedText;
     private WebView mQuotedTextWebView;
     private ShowHideQuotedTextListener mShowHideListener;
     private CheckBox mShowHideCheckBox;
     private boolean mIncludeText = true;
     private Button mRespondInlineButton;
     private RespondInlineListener mRespondInlineListener;

     public QuotedTextView(Context context) {
         this(context, null);
     }

     public QuotedTextView(Context context, AttributeSet attrs) {
         this(context, attrs, -1);
     }

     public QuotedTextView(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs);
         LayoutInflater factory = LayoutInflater.from(context);
         factory.inflate(R.layout.quoted_text, this);

         mQuotedTextWebView = (WebView) findViewById(R.id.quoted_text_web_view);
         Utils.restrictWebView(mQuotedTextWebView);

         mShowHideCheckBox = (CheckBox) findViewById(R.id.hide_quoted_text);
         mShowHideCheckBox.setChecked(true);
         mShowHideCheckBox.setOnClickListener(this);
         findViewById(R.id.hide_quoted_text_label).setOnClickListener(this);


         mRespondInlineButton = (Button) findViewById(R.id.respond_inline_button);
         if (mRespondInlineButton != null) {
             mRespondInlineButton.setEnabled(false);
         }
     }

     public void onDestroy() {
         if (mQuotedTextWebView != null) {
             mQuotedTextWebView.destroy();
         }
     }

     /**
      * Allow the user to include quoted text.
      * @param allow
      */
     public void allowQuotedText(boolean allow) {
         View quotedTextRow = findViewById(R.id.quoted_text_row);
         if (quotedTextRow != null) {
             quotedTextRow.setVisibility(allow? View.VISIBLE: View.GONE);
         }
     }

     /**
      * Allow the user to respond inline.
      * @param allow
      */
     public void allowRespondInline(boolean allow) {
         if (mRespondInlineButton != null) {
             mRespondInlineButton.setVisibility(allow? View.VISIBLE : View.GONE);
         }
     }

     /**
      * Returns the quoted text if the user hasn't dismissed it, otherwise
      * returns null.
      */
     public CharSequence getQuotedTextIfIncluded() {
         if (mIncludeText) {
             return mQuotedText;
         }
         return null;
     }

     /**
      * Always returns the quoted text.
      */
     public CharSequence getQuotedText() {
         return mQuotedText;
     }

     /**
      * @return whether or not the user has selected to include quoted text.
      */
     public boolean isTextIncluded() {
         return mIncludeText;
     }

     public void setShowHideListener(ShowHideQuotedTextListener listener) {
         mShowHideListener = listener;
     }


     public void setRespondInlineListener(RespondInlineListener listener) {
         mRespondInlineListener = listener;
     }

     @Override
     public void onClick(View v) {
         switch (v.getId()) {
             case R.id.respond_inline_button: {
                 respondInline();
                 break;
             }
             case R.id.hide_quoted_text:
                 updateCheckedState(mShowHideCheckBox.isChecked());
                 break;
             case R.id.hide_quoted_text_label:
                 updateCheckedState(!mShowHideCheckBox.isChecked());
                 break;
         }
     }

     /**
      * Update the state of the checkbox for the QuotedTextView as if it were
      * tapped by the user. Also updates the visibility of the QuotedText area.
      * @param checked Either true or false.
      */
     public void updateCheckedState(boolean checked) {
         mShowHideCheckBox.setChecked(checked);
         updateQuotedTextVisibility(checked);
         if (mShowHideListener != null) {
             mShowHideListener.onShowHideQuotedText(checked);
         }
     }

     private void updateQuotedTextVisibility(boolean show) {
         mQuotedTextWebView.setVisibility(show ? View.VISIBLE : View.GONE);
         mIncludeText = show;
     }

     private void populateData() {
         String backgroundColor = getContext().getResources().getString(
                 R.string.quoted_text_background_color_string);
         String fontColor = getContext().getResources().getString(
                 R.string.quoted_text_font_color_string);
         String html = "<head><style type=\"text/css\">* body { background-color: "
                 + backgroundColor + "; color: " + fontColor + "; }</style></head>"
                 + mQuotedText.toString();
         mQuotedTextWebView.loadDataWithBaseURL(null, html, "text/html", "utf-8", null);
     }

     private void respondInline() {
         // Copy the text in the quoted message to the body of the
         // message after stripping the html.
         HtmlParser parser = new HtmlParser();
         HtmlDocument doc = parser.parse(getQuotedText().toString());
         HtmlTreeBuilder builder = new HtmlTreeBuilder();
         doc.accept(builder);
         if (mRespondInlineListener != null) {
             mRespondInlineListener.onRespondInline("\n" + builder.getTree().getPlainText());
         }
         // Set quoted text to unchecked and not visible.
         updateCheckedState(false);
         mRespondInlineButton.setVisibility(View.GONE);
         // Hide everything to do with quoted text.
         View quotedTextView = findViewById(R.id.quoted_text_area);
         if (quotedTextView != null) {
             quotedTextView.setVisibility(View.GONE);
         }
     }

     /**
      * Interface for listeners that want to be notified when quoted text
      * is shown / hidden.
      */
     public interface ShowHideQuotedTextListener {
         public void onShowHideQuotedText(boolean show);
     }

     /**
      * Interface for listeners that want to be notified when the user
      * chooses to respond inline.
      */
     public interface RespondInlineListener {
         public void onRespondInline(String text);
     }

     private String getHtmlText(Message message) {
         if (message.bodyHtml != null) {
             return message.bodyHtml;
         } else if (message.bodyText != null) {
             // STOPSHIP Sanitize this
             return Html.toHtml(new SpannedString(message.bodyText));
         } else {
             return "";
         }
     }

     public void setQuotedText(int action, Message refMessage, boolean allow) {
         setVisibility(View.VISIBLE);
         String htmlText = getHtmlText(refMessage);
         StringBuffer quotedText = new StringBuffer();
         DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT);
         Date date = new Date(refMessage.dateReceivedMs);
         Resources resources = getContext().getResources();
         if (action == ComposeActivity.REPLY || action == ComposeActivity.REPLY_ALL) {
             quotedText.append(QUOTE_BEGIN);
             quotedText
                     .append(String.format(
                             resources.getString(R.string.reply_attribution),
                             dateFormat.format(date),
                             Utils.cleanUpString(
                                     refMessage.from, true)));
             quotedText.append(HEADER_SEPARATOR);
             quotedText.append(BLOCKQUOTE_BEGIN);
             quotedText.append(htmlText);
             quotedText.append(BLOCKQUOTE_END);
             quotedText.append(QUOTE_END);
         } else if (action == ComposeActivity.FORWARD) {
             quotedText.append(QUOTE_BEGIN);
             quotedText
                     .append(String.format(resources.getString(R.string.forward_attribution), Utils
                             .cleanUpString(refMessage.from,
                                     true /* remove empty quotes */), dateFormat.format(date), Utils
                             .cleanUpString(refMessage.subject,
                                     false /* don't remove empty quotes */), Utils.cleanUpString(
                             refMessage.to, true)));
             String ccAddresses = refMessage.cc;
             quotedText.append(String.format(resources.getString(R.string.cc_attribution),
                     Utils.cleanUpString(ccAddresses, true /* remove empty quotes */)));
         }
         quotedText.append(HEADER_SEPARATOR);
         quotedText.append(htmlText);
         quotedText.append(QUOTE_END);
         setQuotedText(quotedText);
         allowQuotedText(allow);
         // If there is quoted text, we always allow respond inline, since this
         // may be a forward.
         allowRespondInline(true);
     }

     public void setQuotedTextFromDraft(CharSequence htmlText) {
         setVisibility(View.VISIBLE);
         setQuotedText(htmlText);
         allowQuotedText(true);
         // If there is quoted text, we always allow respond inline, since this
         // may be a forward.
         allowRespondInline(true);
     }

     /**
      * Set quoted text. Some use cases may not want to display the check box (i.e. forwarding) so
      * allow control of that.
      */
     private void setQuotedText(CharSequence quotedText) {
         mQuotedText = quotedText;
         populateData();
         if (mRespondInlineButton != null) {
             if (!TextUtils.isEmpty(quotedText)) {
                 mRespondInlineButton.setVisibility(View.VISIBLE);
                 mRespondInlineButton.setEnabled(true);
                 mRespondInlineButton.setOnClickListener(this);
             } else {
                 // No text to copy; disable the respond inline button.
                 mRespondInlineButton.setVisibility(View.GONE);
                 mRespondInlineButton.setEnabled(false);
             }
         }
     }

     public static boolean containsQuotedText(String text) {
         int pos = text.indexOf(QuotedTextView.HEADER_SEPARATOR);
         return pos >= 0;
     }

     public static int getQuotedTextOffset(String text) {
         return text.indexOf(QuotedTextView.HEADER_SEPARATOR) + HEADER_SEPARATOR_LENGTH;
     }
 }
	/**
	* Copyright (c) 2011, Google Inc.
	*
	* 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.mail.compose;

	import android.content.Context;
	import android.content.res.Resources;
	import android.text.Html;
	import android.text.SpannedString;
	import android.text.TextUtils;
	import android.util.AttributeSet;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.View.OnClickListener;
	import android.webkit.WebView;
	import android.widget.Button;
	import android.widget.CheckBox;
	import android.widget.LinearLayout;

	import com.android.mail.R;
	import com.android.mail.providers.Message;
	import com.android.mail.utils.Utils;
	import com.google.android.common.html.parser.HtmlDocument;
	import com.google.android.common.html.parser.HtmlParser;
	import com.google.android.common.html.parser.HtmlTreeBuilder;

	import java.text.DateFormat;
	import java.util.Date;

	/*
	* View for displaying the quoted text in the compose screen for a reply
	* or forward. A close button is included in the upper right to remove
	* the quoted text from the message.
	*/
	class QuotedTextView extends LinearLayout implements OnClickListener {
	// HTML tags used to quote reply content
	// The following style must be in-sync with
	// pinto.app.MessageUtil.QUOTE_STYLE and
	// java/com/google/caribou/ui/pinto/modules/app/messageutil.js
	// BEG_QUOTE_BIDI is also available there when we support BIDI
	private static final String BLOCKQUOTE_BEGIN = "<blockquote class=\"quote\" style=\""
	+ "margin:0 0 0 .8ex;" + "border-left:1px #ccc solid;" + "padding-left:1ex\">";
	private static final String BLOCKQUOTE_END = "</blockquote>";
	// HTML tags used to quote replies & forwards
	/* package for testing */static final String QUOTE_BEGIN = "<div class=\"quote\">";
	private static final String QUOTE_END = "</div>";

	// Separates the attribution headers (Subject, To, etc) from the body in
	// quoted text.
	private static final String HEADER_SEPARATOR = "<br type='attribution'>";
	private static final int HEADER_SEPARATOR_LENGTH = HEADER_SEPARATOR.length();

	private CharSequence mQuotedText;
	private WebView mQuotedTextWebView;
	private ShowHideQuotedTextListener mShowHideListener;
	private CheckBox mShowHideCheckBox;
	private boolean mIncludeText = true;
	private Button mRespondInlineButton;
	private RespondInlineListener mRespondInlineListener;

	public QuotedTextView(Context context) {
	this(context, null);
	}

	public QuotedTextView(Context context, AttributeSet attrs) {
	this(context, attrs, -1);
	}

	public QuotedTextView(Context context, AttributeSet attrs, int defStyle) {
	super(context, attrs);
	LayoutInflater factory = LayoutInflater.from(context);
	factory.inflate(R.layout.quoted_text, this);

	mQuotedTextWebView = (WebView) findViewById(R.id.quoted_text_web_view);
	Utils.restrictWebView(mQuotedTextWebView);

	mShowHideCheckBox = (CheckBox) findViewById(R.id.hide_quoted_text);
	mShowHideCheckBox.setChecked(true);
	mShowHideCheckBox.setOnClickListener(this);
	findViewById(R.id.hide_quoted_text_label).setOnClickListener(this);


	mRespondInlineButton = (Button) findViewById(R.id.respond_inline_button);
	if (mRespondInlineButton != null) {
	mRespondInlineButton.setEnabled(false);
	}
	}

	public void onDestroy() {
	if (mQuotedTextWebView != null) {
	mQuotedTextWebView.destroy();
	}
	}

	/**
	* Allow the user to include quoted text.
	* @param allow
	*/
	public void allowQuotedText(boolean allow) {
	View quotedTextRow = findViewById(R.id.quoted_text_row);
	if (quotedTextRow != null) {
	quotedTextRow.setVisibility(allow? View.VISIBLE: View.GONE);
	}
	}

	/**
	* Allow the user to respond inline.
	* @param allow
	*/
	public void allowRespondInline(boolean allow) {
	if (mRespondInlineButton != null) {
	mRespondInlineButton.setVisibility(allow? View.VISIBLE : View.GONE);
	}
	}

	/**
	* Returns the quoted text if the user hasn't dismissed it, otherwise
	* returns null.
	*/
	public CharSequence getQuotedTextIfIncluded() {
	if (mIncludeText) {
	return mQuotedText;
	}
	return null;
	}

	/**
	* Always returns the quoted text.
	*/
	public CharSequence getQuotedText() {
	return mQuotedText;
	}

	/**
	* @return whether or not the user has selected to include quoted text.
	*/
	public boolean isTextIncluded() {
	return mIncludeText;
	}

	public void setShowHideListener(ShowHideQuotedTextListener listener) {
	mShowHideListener = listener;
	}


	public void setRespondInlineListener(RespondInlineListener listener) {
	mRespondInlineListener = listener;
	}

	@Override
	public void onClick(View v) {
	switch (v.getId()) {
	case R.id.respond_inline_button: {
	respondInline();
	break;
	}
	case R.id.hide_quoted_text:
	updateCheckedState(mShowHideCheckBox.isChecked());
	break;
	case R.id.hide_quoted_text_label:
	updateCheckedState(!mShowHideCheckBox.isChecked());
	break;
	}
	}

	/**
	* Update the state of the checkbox for the QuotedTextView as if it were
	* tapped by the user. Also updates the visibility of the QuotedText area.
	* @param checked Either true or false.
	*/
	public void updateCheckedState(boolean checked) {
	mShowHideCheckBox.setChecked(checked);
	updateQuotedTextVisibility(checked);
	if (mShowHideListener != null) {
	mShowHideListener.onShowHideQuotedText(checked);
	}
	}

	private void updateQuotedTextVisibility(boolean show) {
	mQuotedTextWebView.setVisibility(show ? View.VISIBLE : View.GONE);
	mIncludeText = show;
	}

	private void populateData() {
	String backgroundColor = getContext().getResources().getString(
	R.string.quoted_text_background_color_string);
	String fontColor = getContext().getResources().getString(
	R.string.quoted_text_font_color_string);
	String html = "<head><style type=\"text/css\">* body { background-color: "
	+ backgroundColor + "; color: " + fontColor + "; }</style></head>"
	+ mQuotedText.toString();
	mQuotedTextWebView.loadDataWithBaseURL(null, html, "text/html", "utf-8", null);
	}

	private void respondInline() {
	// Copy the text in the quoted message to the body of the
	// message after stripping the html.
	HtmlParser parser = new HtmlParser();
	HtmlDocument doc = parser.parse(getQuotedText().toString());
	HtmlTreeBuilder builder = new HtmlTreeBuilder();
	doc.accept(builder);
	if (mRespondInlineListener != null) {
	mRespondInlineListener.onRespondInline("\n" + builder.getTree().getPlainText());
	}
	// Set quoted text to unchecked and not visible.
	updateCheckedState(false);
	mRespondInlineButton.setVisibility(View.GONE);
	// Hide everything to do with quoted text.
	View quotedTextView = findViewById(R.id.quoted_text_area);
	if (quotedTextView != null) {
	quotedTextView.setVisibility(View.GONE);
	}
	}

	/**
	* Interface for listeners that want to be notified when quoted text
	* is shown / hidden.
	*/
	public interface ShowHideQuotedTextListener {
	public void onShowHideQuotedText(boolean show);
	}

	/**
	* Interface for listeners that want to be notified when the user
	* chooses to respond inline.
	*/
	public interface RespondInlineListener {
	public void onRespondInline(String text);
	}

	private String getHtmlText(Message message) {
	if (message.bodyHtml != null) {
	return message.bodyHtml;
	} else if (message.bodyText != null) {
	// STOPSHIP Sanitize this
	return Html.toHtml(new SpannedString(message.bodyText));
	} else {
	return "";
	}
	}

	public void setQuotedText(int action, Message refMessage, boolean allow) {
	setVisibility(View.VISIBLE);
	String htmlText = getHtmlText(refMessage);
	StringBuffer quotedText = new StringBuffer();
	DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT);
	Date date = new Date(refMessage.dateReceivedMs);
	Resources resources = getContext().getResources();
	if (action == ComposeActivity.REPLY \|\| action == ComposeActivity.REPLY_ALL) {
	quotedText.append(QUOTE_BEGIN);
	quotedText
	.append(String.format(
	resources.getString(R.string.reply_attribution),
	dateFormat.format(date),
	Utils.cleanUpString(
	refMessage.from, true)));
	quotedText.append(HEADER_SEPARATOR);
	quotedText.append(BLOCKQUOTE_BEGIN);
	quotedText.append(htmlText);
	quotedText.append(BLOCKQUOTE_END);
	quotedText.append(QUOTE_END);
	} else if (action == ComposeActivity.FORWARD) {
	quotedText.append(QUOTE_BEGIN);
	quotedText
	.append(String.format(resources.getString(R.string.forward_attribution), Utils
	.cleanUpString(refMessage.from,
	true /* remove empty quotes */), dateFormat.format(date), Utils
	.cleanUpString(refMessage.subject,
	false /* don't remove empty quotes */), Utils.cleanUpString(
	refMessage.to, true)));
	String ccAddresses = refMessage.cc;
	quotedText.append(String.format(resources.getString(R.string.cc_attribution),
	Utils.cleanUpString(ccAddresses, true /* remove empty quotes */)));
	}
	quotedText.append(HEADER_SEPARATOR);
	quotedText.append(htmlText);
	quotedText.append(QUOTE_END);
	setQuotedText(quotedText);
	allowQuotedText(allow);
	// If there is quoted text, we always allow respond inline, since this
	// may be a forward.
	allowRespondInline(true);
	}

	public void setQuotedTextFromDraft(CharSequence htmlText) {
	setVisibility(View.VISIBLE);
	setQuotedText(htmlText);
	allowQuotedText(true);
	// If there is quoted text, we always allow respond inline, since this
	// may be a forward.
	allowRespondInline(true);
	}

	/**
	* Set quoted text. Some use cases may not want to display the check box (i.e. forwarding) so
	* allow control of that.
	*/
	private void setQuotedText(CharSequence quotedText) {
	mQuotedText = quotedText;
	populateData();
	if (mRespondInlineButton != null) {
	if (!TextUtils.isEmpty(quotedText)) {
	mRespondInlineButton.setVisibility(View.VISIBLE);
	mRespondInlineButton.setEnabled(true);
	mRespondInlineButton.setOnClickListener(this);
	} else {
	// No text to copy; disable the respond inline button.
	mRespondInlineButton.setVisibility(View.GONE);
	mRespondInlineButton.setEnabled(false);
	}
	}
	}

	public static boolean containsQuotedText(String text) {
	int pos = text.indexOf(QuotedTextView.HEADER_SEPARATOR);
	return pos >= 0;
	}

	public static int getQuotedTextOffset(String text) {
	return text.indexOf(QuotedTextView.HEADER_SEPARATOR) + HEADER_SEPARATOR_LENGTH;
	}
	}