third_party/WebKit/Source/core/page/WindowFeatures.cpp - chromium/src - Git at Google

 /*
  *  Copyright (C) 2000 Harri Porten (porten@kde.org)
  *  Copyright (C) 2006 Jon Shier (jshier@iastate.edu)
  *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reseved.
  *  Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public
  *  License along with this library; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  *  USA
  */

 #include "core/page/WindowFeatures.h"

 #include "platform/geometry/IntRect.h"
 #include "wtf/Assertions.h"
 #include "wtf/MathExtras.h"
 #include "wtf/text/StringHash.h"

 namespace blink {

 // Though isspace() considers \t and \v to be whitespace, Win IE doesn't when parsing window features.
 static bool isWindowFeaturesSeparator(UChar c)
 {
     return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '=' || c == ',' || c == '\0';
 }

 WindowFeatures::WindowFeatures(const String& features)
     : x(0)
     , xSet(false)
     , y(0)
     , ySet(false)
     , width(0)
     , widthSet(false)
     , height(0)
     , heightSet(false)
     , resizable(true)
     , fullscreen(false)
     , dialog(false)
     , noopener(false)
 {
     /*
      The IE rule is: all features except for channelmode and fullscreen default to YES, but
      if the user specifies a feature string, all features default to NO. (There is no public
      standard that applies to this method.)

      <http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/open_0.asp>
      We always allow a window to be resized, which is consistent with Firefox.
      */

     if (features.isEmpty()) {
         menuBarVisible = true;
         statusBarVisible = true;
         toolBarVisible = true;
         locationBarVisible = true;
         scrollbarsVisible = true;
         return;
     }

     menuBarVisible = false;
     statusBarVisible = false;
     toolBarVisible = false;
     locationBarVisible = false;
     scrollbarsVisible = false;

     // Tread lightly in this code -- it was specifically designed to mimic Win IE's parsing behavior.
     unsigned keyBegin, keyEnd;
     unsigned valueBegin, valueEnd;

     String buffer = features.lower();
     unsigned length = buffer.length();
     for (unsigned i = 0; i < length; ) {
         // skip to first non-separator, but don't skip past the end of the string
         while (i < length && isWindowFeaturesSeparator(buffer[i]))
             i++;
         keyBegin = i;

         // skip to first separator
         while (i < length && !isWindowFeaturesSeparator(buffer[i]))
             i++;
         keyEnd = i;

         ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

         // skip to first '=', but don't skip past a ',' or the end of the string
         while (i < length && buffer[i] != '=') {
             if (buffer[i] == ',')
                 break;
             i++;
         }

         ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

         // skip to first non-separator, but don't skip past a ',' or the end of the string
         while (i < length && isWindowFeaturesSeparator(buffer[i])) {
             if (buffer[i] == ',')
                 break;
             i++;
         }
         valueBegin = i;

         ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

         // skip to first separator
         while (i < length && !isWindowFeaturesSeparator(buffer[i]))
             i++;
         valueEnd = i;

         ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

         String keyString(buffer.substring(keyBegin, keyEnd - keyBegin));
         String valueString(buffer.substring(valueBegin, valueEnd - valueBegin));

         setWindowFeature(keyString, valueString);
     }
 }

 void WindowFeatures::setWindowFeature(const String& keyString, const String& valueString)
 {
     int value;

     // Listing a key with no value is shorthand for key=yes
     if (valueString.isEmpty() || valueString == "yes")
         value = 1;
     else
         value = valueString.toInt();

     // We treat keyString of "resizable" here as an additional feature rather than setting resizeable to true.
     // This is consistent with Firefox, but could also be handled at another level.

     if (keyString == "left" || keyString == "screenx") {
         xSet = true;
         x = value;
     } else if (keyString == "top" || keyString == "screeny") {
         ySet = true;
         y = value;
     } else if (keyString == "width" || keyString == "innerwidth") {
         widthSet = true;
         width = value;
     } else if (keyString == "height" || keyString == "innerheight") {
         heightSet = true;
         height = value;
     } else if (keyString == "menubar") {
         menuBarVisible = value;
     } else if (keyString == "toolbar") {
         toolBarVisible = value;
     } else if (keyString == "location") {
         locationBarVisible = value;
     } else if (keyString == "status") {
         statusBarVisible = value;
     } else if (keyString == "fullscreen") {
         fullscreen = value;
     } else if (keyString == "scrollbars") {
         scrollbarsVisible = value;
     } else if (keyString == "noopener") {
         noopener = true;
     } else if (value == 1) {
         additionalFeatures.append(keyString);
     }
 }

 WindowFeatures::WindowFeatures(const String& dialogFeaturesString, const IntRect& screenAvailableRect)
     : widthSet(true)
     , heightSet(true)
     , menuBarVisible(false)
     , toolBarVisible(false)
     , locationBarVisible(false)
     , fullscreen(false)
     , dialog(true)
     , noopener(false)
 {
     DialogFeaturesMap features;
     parseDialogFeatures(dialogFeaturesString, features);

     const bool trusted = false;

     // The following features from Microsoft's documentation are not implemented:
     // - default font settings
     // - width, height, left, and top specified in units other than "px"
     // - edge (sunken or raised, default is raised)
     // - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
     // - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
     // - unadorned: trusted && boolFeature(features, "unadorned");

     width = intFeature(features, "dialogwidth", 100, screenAvailableRect.width(), 620); // default here came from frame size of dialog in MacIE
     height = intFeature(features, "dialogheight", 100, screenAvailableRect.height(), 450); // default here came from frame size of dialog in MacIE

     x = intFeature(features, "dialogleft", screenAvailableRect.x(), screenAvailableRect.maxX() - width, -1);
     xSet = x > 0;
     y = intFeature(features, "dialogtop", screenAvailableRect.y(), screenAvailableRect.maxY() - height, -1);
     ySet = y > 0;

     if (boolFeature(features, "center", true)) {
         if (!xSet) {
             x = screenAvailableRect.x() + (screenAvailableRect.width() - width) / 2;
             xSet = true;
         }
         if (!ySet) {
             y = screenAvailableRect.y() + (screenAvailableRect.height() - height) / 2;
             ySet = true;
         }
     }

     resizable = boolFeature(features, "resizable");
     scrollbarsVisible = boolFeature(features, "scroll", true);
     statusBarVisible = boolFeature(features, "status", !trusted);
 }

 bool WindowFeatures::boolFeature(const DialogFeaturesMap& features, const char* key, bool defaultValue)
 {
     DialogFeaturesMap::const_iterator it = features.find(key);
     if (it == features.end())
         return defaultValue;
     const String& value = it->value;
     return value.isNull() || value == "1" || value == "yes" || value == "on";
 }

 int WindowFeatures::intFeature(const DialogFeaturesMap& features, const char* key, int min, int max, int defaultValue)
 {
     DialogFeaturesMap::const_iterator it = features.find(key);
     if (it == features.end())
         return defaultValue;
     bool ok;
     int parsedNumber = it->value.toInt(&ok);
     if (!ok)
         return defaultValue;
     if (parsedNumber < min || max <= min)
         return min;
     if (parsedNumber > max)
         return max;
     return parsedNumber;
 }

 void WindowFeatures::parseDialogFeatures(const String& string, DialogFeaturesMap& map)
 {
     Vector<String> vector;
     string.split(';', vector);
     size_t size = vector.size();
     for (size_t i = 0; i < size; ++i) {
         const String& featureString = vector[i];

         size_t separatorPosition = featureString.find('=');
         size_t colonPosition = featureString.find(':');
         if (separatorPosition != kNotFound && colonPosition != kNotFound)
             continue; // ignore strings that have both = and :
         if (separatorPosition == kNotFound)
             separatorPosition = colonPosition;

         String key = featureString.left(separatorPosition).stripWhiteSpace().lower();

         // Null string for value indicates key without value.
         String value;
         if (separatorPosition != kNotFound) {
             value = featureString.substring(separatorPosition + 1).stripWhiteSpace().lower();
             value = value.left(value.find(' '));
         }

         map.set(key, value);
     }
 }

 } // namespace blink
	/*
	* Copyright (C) 2000 Harri Porten (porten@kde.org)
	* Copyright (C) 2006 Jon Shier (jshier@iastate.edu)
	* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reseved.
	* Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
	* USA
	*/

	#include "core/page/WindowFeatures.h"

	#include "platform/geometry/IntRect.h"
	#include "wtf/Assertions.h"
	#include "wtf/MathExtras.h"
	#include "wtf/text/StringHash.h"

	namespace blink {

	// Though isspace() considers \t and \v to be whitespace, Win IE doesn't when parsing window features.
	static bool isWindowFeaturesSeparator(UChar c)
	{
	return c == ' ' \|\| c == '\t' \|\| c == '\n' \|\| c == '\r' \|\| c == '=' \|\| c == ',' \|\| c == '\0';
	}

	WindowFeatures::WindowFeatures(const String& features)
	: x(0)
	, xSet(false)
	, y(0)
	, ySet(false)
	, width(0)
	, widthSet(false)
	, height(0)
	, heightSet(false)
	, resizable(true)
	, fullscreen(false)
	, dialog(false)
	, noopener(false)
	{
	/*
	The IE rule is: all features except for channelmode and fullscreen default to YES, but
	if the user specifies a feature string, all features default to NO. (There is no public
	standard that applies to this method.)

	<http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/open_0.asp>
	We always allow a window to be resized, which is consistent with Firefox.
	*/

	if (features.isEmpty()) {
	menuBarVisible = true;
	statusBarVisible = true;
	toolBarVisible = true;
	locationBarVisible = true;
	scrollbarsVisible = true;
	return;
	}

	menuBarVisible = false;
	statusBarVisible = false;
	toolBarVisible = false;
	locationBarVisible = false;
	scrollbarsVisible = false;

	// Tread lightly in this code -- it was specifically designed to mimic Win IE's parsing behavior.
	unsigned keyBegin, keyEnd;
	unsigned valueBegin, valueEnd;

	String buffer = features.lower();
	unsigned length = buffer.length();
	for (unsigned i = 0; i < length; ) {
	// skip to first non-separator, but don't skip past the end of the string
	while (i < length && isWindowFeaturesSeparator(buffer[i]))
	i++;
	keyBegin = i;

	// skip to first separator
	while (i < length && !isWindowFeaturesSeparator(buffer[i]))
	i++;
	keyEnd = i;

	ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

	// skip to first '=', but don't skip past a ',' or the end of the string
	while (i < length && buffer[i] != '=') {
	if (buffer[i] == ',')
	break;
	i++;
	}

	ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

	// skip to first non-separator, but don't skip past a ',' or the end of the string
	while (i < length && isWindowFeaturesSeparator(buffer[i])) {
	if (buffer[i] == ',')
	break;
	i++;
	}
	valueBegin = i;

	ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

	// skip to first separator
	while (i < length && !isWindowFeaturesSeparator(buffer[i]))
	i++;
	valueEnd = i;

	ASSERT_WITH_SECURITY_IMPLICATION(i <= length);

	String keyString(buffer.substring(keyBegin, keyEnd - keyBegin));
	String valueString(buffer.substring(valueBegin, valueEnd - valueBegin));

	setWindowFeature(keyString, valueString);
	}
	}

	void WindowFeatures::setWindowFeature(const String& keyString, const String& valueString)
	{
	int value;

	// Listing a key with no value is shorthand for key=yes
	if (valueString.isEmpty() \|\| valueString == "yes")
	value = 1;
	else
	value = valueString.toInt();

	// We treat keyString of "resizable" here as an additional feature rather than setting resizeable to true.
	// This is consistent with Firefox, but could also be handled at another level.

	if (keyString == "left" \|\| keyString == "screenx") {
	xSet = true;
	x = value;
	} else if (keyString == "top" \|\| keyString == "screeny") {
	ySet = true;
	y = value;
	} else if (keyString == "width" \|\| keyString == "innerwidth") {
	widthSet = true;
	width = value;
	} else if (keyString == "height" \|\| keyString == "innerheight") {
	heightSet = true;
	height = value;
	} else if (keyString == "menubar") {
	menuBarVisible = value;
	} else if (keyString == "toolbar") {
	toolBarVisible = value;
	} else if (keyString == "location") {
	locationBarVisible = value;
	} else if (keyString == "status") {
	statusBarVisible = value;
	} else if (keyString == "fullscreen") {
	fullscreen = value;
	} else if (keyString == "scrollbars") {
	scrollbarsVisible = value;
	} else if (keyString == "noopener") {
	noopener = true;
	} else if (value == 1) {
	additionalFeatures.append(keyString);
	}
	}

	WindowFeatures::WindowFeatures(const String& dialogFeaturesString, const IntRect& screenAvailableRect)
	: widthSet(true)
	, heightSet(true)
	, menuBarVisible(false)
	, toolBarVisible(false)
	, locationBarVisible(false)
	, fullscreen(false)
	, dialog(true)
	, noopener(false)
	{
	DialogFeaturesMap features;
	parseDialogFeatures(dialogFeaturesString, features);

	const bool trusted = false;

	// The following features from Microsoft's documentation are not implemented:
	// - default font settings
	// - width, height, left, and top specified in units other than "px"
	// - edge (sunken or raised, default is raised)
	// - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
	// - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
	// - unadorned: trusted && boolFeature(features, "unadorned");

	width = intFeature(features, "dialogwidth", 100, screenAvailableRect.width(), 620); // default here came from frame size of dialog in MacIE
	height = intFeature(features, "dialogheight", 100, screenAvailableRect.height(), 450); // default here came from frame size of dialog in MacIE

	x = intFeature(features, "dialogleft", screenAvailableRect.x(), screenAvailableRect.maxX() - width, -1);
	xSet = x > 0;
	y = intFeature(features, "dialogtop", screenAvailableRect.y(), screenAvailableRect.maxY() - height, -1);
	ySet = y > 0;

	if (boolFeature(features, "center", true)) {
	if (!xSet) {
	x = screenAvailableRect.x() + (screenAvailableRect.width() - width) / 2;
	xSet = true;
	}
	if (!ySet) {
	y = screenAvailableRect.y() + (screenAvailableRect.height() - height) / 2;
	ySet = true;
	}
	}

	resizable = boolFeature(features, "resizable");
	scrollbarsVisible = boolFeature(features, "scroll", true);
	statusBarVisible = boolFeature(features, "status", !trusted);
	}

	bool WindowFeatures::boolFeature(const DialogFeaturesMap& features, const char* key, bool defaultValue)
	{
	DialogFeaturesMap::const_iterator it = features.find(key);
	if (it == features.end())
	return defaultValue;
	const String& value = it->value;
	return value.isNull() \|\| value == "1" \|\| value == "yes" \|\| value == "on";
	}

	int WindowFeatures::intFeature(const DialogFeaturesMap& features, const char* key, int min, int max, int defaultValue)
	{
	DialogFeaturesMap::const_iterator it = features.find(key);
	if (it == features.end())
	return defaultValue;
	bool ok;
	int parsedNumber = it->value.toInt(&ok);
	if (!ok)
	return defaultValue;
	if (parsedNumber < min \|\| max <= min)
	return min;
	if (parsedNumber > max)
	return max;
	return parsedNumber;
	}

	void WindowFeatures::parseDialogFeatures(const String& string, DialogFeaturesMap& map)
	{
	Vector<String> vector;
	string.split(';', vector);
	size_t size = vector.size();
	for (size_t i = 0; i < size; ++i) {
	const String& featureString = vector[i];

	size_t separatorPosition = featureString.find('=');
	size_t colonPosition = featureString.find(':');
	if (separatorPosition != kNotFound && colonPosition != kNotFound)
	continue; // ignore strings that have both = and :
	if (separatorPosition == kNotFound)
	separatorPosition = colonPosition;

	String key = featureString.left(separatorPosition).stripWhiteSpace().lower();

	// Null string for value indicates key without value.
	String value;
	if (separatorPosition != kNotFound) {
	value = featureString.substring(separatorPosition + 1).stripWhiteSpace().lower();
	value = value.left(value.find(' '));
	}

	map.set(key, value);
	}
	}

	} // namespace blink