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DomElement.C
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/*
* Copyright (C) 2008 Emweb bv, Herent, Belgium.
*
* See the LICENSE file for terms of use.
*/
#include <cstdio>
#include <sstream>
#include <stdexcept>
#include <string>
#include <unordered_map>
#include "Wt/WObject.h"
#include "Wt/WApplication.h"
#include "Wt/WContainerWidget.h"
#include "Wt/WEnvironment.h"
#include "Wt/WException.h"
#include "Wt/WServer.h"
#include "Wt/WStringStream.h"
#include "Wt/WTheme.h"
#include "DomElement.h"
#include "WebUtils.h"
#include "StringUtils.h"
#include "Configuration.h"
namespace {
std::string elementNames_[] =
{ "a", "br", "button", "col",
"colgroup",
"div", "fieldset", "form",
"h1", "h2", "h3", "h4",
"h5", "h6", "iframe", "img",
"input", "label", "legend", "li",
"ol",
"option", "ul", "script", "select",
"span", "table", "tbody", "thead",
"tfoot", "th", "td", "textarea",
"optgroup",
"tr", "p", "canvas",
"map", "area", "style",
"object", "param",
"audio", "video", "source",
"b", "strong", "em", "i", "hr",
"datalist"
};
/*
* Issue #13063: This is used to check element names of OTHER DOM
* ElementType to prevent from potential attacks if an attacker somehow
* manages to add a widget to a page and modify its element name. This
* will prevent the attacker from being able to set the tag to a
* dangerous one such as script.
*
* An element is safe if it only affects the layout of the page and
* does not perform a download or code execution.
*
* This list MUST end with an empty string!
*/
std::string safeElementNames_[] =
{ "address", "article", "aside", "footer",
"header", "h1", "h2", "h3", "h4", "h5", "h6", "hgroup",
"main", "nav", "section", "search",
"blockquote", "div", "p", "pre", "hr",
"figcaption", "figure",
"dd", "dl", "dt", "li", "ul", "ol", "menu",
"a", "abbr", "b", "bdi", "bdo", "br", "cite", "code", "data",
"dfn", "em", "i", "kdb", "mark", "q", "rp", "rt", "ruby", "s",
"samp", "small", "span", "strong", "sub", "sup", "time", "u",
"var", "wbr",
"caption", "col", "colgroup", "table", "tbody", "td", "tfoot",
"th", "thead", "tr",
"" // end of list
};
bool defaultInline_[] =
{ true, false, true, false,
false,
false, false, false,
false, false, false, false,
false, false, true, true,
true, true, true, false,
false,
true, false, false, true,
true, false, false, false,
false, false, false, true,
true,
false, false, true,
false, true, true,
false, false,
false, false, false,
true, true, true, true, false,
false
};
typedef std::unordered_map<Wt::Property, std::string> CssPropertyMap;
CssPropertyMap createCssNamesMap()
{
CssPropertyMap cssNames;
Wt::Utils::insert(cssNames, Wt::Property::StylePosition, std::string("position"));
Wt::Utils::insert(cssNames, Wt::Property::StyleZIndex,std::string("z-index"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFloat,std::string("float"));
Wt::Utils::insert(cssNames, Wt::Property::StyleClear,std::string("clear"));
Wt::Utils::insert(cssNames, Wt::Property::StyleWidth,std::string("width"));
Wt::Utils::insert(cssNames, Wt::Property::StyleHeight,std::string("height"));
Wt::Utils::insert(cssNames, Wt::Property::StyleLineHeight,std::string("line-height"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMinWidth,std::string("min-width"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMinHeight,std::string("min-height"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMaxWidth,std::string("max-width"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMaxHeight,std::string("max-height"));
Wt::Utils::insert(cssNames, Wt::Property::StyleLeft,std::string("left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleRight,std::string("right"));
Wt::Utils::insert(cssNames, Wt::Property::StyleTop,std::string("top"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBottom,std::string("bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleVerticalAlign,std::string("vertical-align"));
Wt::Utils::insert(cssNames, Wt::Property::StyleTextAlign,std::string("text-align"));
Wt::Utils::insert(cssNames, Wt::Property::StylePadding,std::string("padding"));
Wt::Utils::insert(cssNames, Wt::Property::StylePaddingTop,std::string("padding-top"));
Wt::Utils::insert(cssNames, Wt::Property::StylePaddingRight,std::string("padding-right"));
Wt::Utils::insert(cssNames, Wt::Property::StylePaddingBottom,std::string("padding-bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StylePaddingLeft,std::string("padding-left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMargin,std::string("margin"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMarginTop,std::string("margin-top"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMarginRight,std::string("margin-right"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMarginBottom,std::string("margin-bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleMarginLeft,std::string("margin-left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleCursor,std::string("cursor"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderTop,std::string("border-top"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderRight,std::string("border-right"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderBottom,std::string("border-bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderLeft,std::string("border-left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderColorTop,std::string("border-color-top"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderColorRight,std::string("border-color-right"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderColorBottom,std::string("border-color-bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderColorLeft,std::string("border-color-left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderWidthTop,std::string("border-width-top"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderWidthRight,std::string("border-width-right"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderWidthBottom,std::string("border-width-bottom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderWidthLeft,std::string("border-width-left"));
Wt::Utils::insert(cssNames, Wt::Property::StyleColor,std::string("color"));
Wt::Utils::insert(cssNames, Wt::Property::StyleOverflowX,std::string("overflow-x"));
Wt::Utils::insert(cssNames, Wt::Property::StyleOverflowY,std::string("overflow-y"));
Wt::Utils::insert(cssNames, Wt::Property::StyleOpacity,std::string("opacity"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFontFamily,std::string("font-family"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFontStyle,std::string("font-style"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFontVariant,std::string("font-variant"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFontWeight,std::string("font-weight"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFontSize,std::string("font-size"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBackgroundColor,std::string("background-color"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBackgroundImage,std::string("background-image"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBackgroundRepeat,std::string("background-repeat"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBackgroundAttachment,std::string("background-attachment"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBackgroundPosition,std::string("background-position"));
Wt::Utils::insert(cssNames, Wt::Property::StyleTextDecoration,std::string("text-decoration"));
Wt::Utils::insert(cssNames, Wt::Property::StyleWhiteSpace,std::string("white-space"));
Wt::Utils::insert(cssNames, Wt::Property::StyleTableLayout,std::string("table-layout"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderSpacing,std::string("border-spacing"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBorderCollapse,std::string("border-collapse"));
Wt::Utils::insert(cssNames, Wt::Property::StylePageBreakBefore,std::string("page-break-before"));
Wt::Utils::insert(cssNames, Wt::Property::StylePageBreakAfter,std::string("page-break-after"));
Wt::Utils::insert(cssNames, Wt::Property::StyleZoom,std::string("zoom"));
Wt::Utils::insert(cssNames, Wt::Property::StyleVisibility,std::string("visibility"));
Wt::Utils::insert(cssNames, Wt::Property::StyleDisplay,std::string("display"));
Wt::Utils::insert(cssNames, Wt::Property::StyleWebkitAppearance,std::string("-webkit-appearance"));
Wt::Utils::insert(cssNames, Wt::Property::StyleBoxSizing,std::string("box-sizing"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFlex,std::string("flex"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFlexDirection,std::string("flex-direction"));
Wt::Utils::insert(cssNames, Wt::Property::StyleFlexFlow,std::string("flex-flow"));
Wt::Utils::insert(cssNames, Wt::Property::StyleAlignSelf,std::string("align-self"));
Wt::Utils::insert(cssNames, Wt::Property::StyleJustifyContent,std::string("justify-content"));
return cssNames;
}
CssPropertyMap cssNamesMap_ = createCssNamesMap();
CssPropertyMap createCssCamelNamesMap()
{
CssPropertyMap cssCamelNames;
Wt::Utils::insert(cssCamelNames, Wt::Property::Style,std::string("cssText"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePosition,std::string("position"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleZIndex,std::string("zIndex"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFloat,std::string("cssFloat"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleClear,std::string("clear"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleWidth,std::string("width"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleHeight,std::string("height"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleLineHeight,std::string("lineHeight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMinWidth,std::string("minWidth"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMinHeight,std::string("minHeight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMaxWidth,std::string("maxWidth"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMaxHeight,std::string("maxHeight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleLeft,std::string("left"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleRight,std::string("right"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleTop,std::string("top"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBottom,std::string("bottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleVerticalAlign,std::string("verticalAlign"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleTextAlign,std::string("textAlign"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePadding,std::string("padding"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePaddingTop,std::string("paddingTop"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePaddingRight,std::string("paddingRight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePaddingBottom,std::string("paddingBottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePaddingLeft,std::string("paddingLeft"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMargin,std::string("margin"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMarginTop,std::string("marginTop"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMarginRight,std::string("marginRight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMarginBottom,std::string("marginBottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleMarginLeft,std::string("marginLeft"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleCursor,std::string("cursor"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderTop,std::string("borderTop"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderRight,std::string("borderRight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderBottom,std::string("borderBottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderLeft,std::string("borderLeft"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderColorTop,std::string("borderColorTop"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderColorRight,std::string("borderColorRight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderColorBottom,std::string("borderColorBottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderColorLeft,std::string("borderColorLeft"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderWidthTop,std::string("borderWidthTop"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderWidthRight,std::string("borderWidthRight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderWidthBottom,std::string("borderWidthBottom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderWidthLeft,std::string("borderWidthLeft"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleColor,std::string("color"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleOverflowX,std::string("overflowX"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleOverflowY,std::string("overflowY"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleOpacity,std::string("opacity"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFontFamily,std::string("fontFamily"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFontStyle,std::string("fontStyle"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFontVariant,std::string("fontVariant"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFontWeight,std::string("fontWeight"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFontSize,std::string("fontSize"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBackgroundColor,std::string("backgroundColor"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBackgroundImage,std::string("backgroundImage"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBackgroundRepeat,std::string("backgroundRepeat"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBackgroundAttachment,std::string("backgroundAttachment"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBackgroundPosition,std::string("backgroundPosition"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleTextDecoration,std::string("textDecoration"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleWhiteSpace,std::string("whiteSpace"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleTableLayout,std::string("tableLayout"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderSpacing,std::string("borderSpacing"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBorderCollapse,std::string("border-collapse"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePageBreakBefore,std::string("pageBreakBefore"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StylePageBreakAfter,std::string("pageBreakAfter"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleZoom,std::string("zoom"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleVisibility,std::string("visibility"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleDisplay,std::string("display"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleWebkitAppearance,std::string("webKitAppearance"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleBoxSizing,std::string("boxSizing"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFlex,std::string("flex"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFlexDirection,std::string("flexDirection"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleFlexFlow,std::string("flexFlow"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleAlignSelf,std::string("alignSelf"));
Wt::Utils::insert(cssCamelNames, Wt::Property::StyleJustifyContent,std::string("justifyContent"));
return cssCamelNames;
}
CssPropertyMap cssCamelNamesMap_ = createCssCamelNamesMap();
const std::string unsafeChars_ = " $&+,:;=?@'\"<>#%{}|\\^~[]`/";
inline char hexLookup(int n) {
return "0123456789abcdef"[(n & 0xF)];
}
#ifndef WT_TARGET_JAVA
static_assert(sizeof(elementNames_) / sizeof(elementNames_[0]) == static_cast<unsigned int>(Wt::DomElementType::UNKNOWN), "There should be as many element names as there are dom elements (excluding unknown and other)");
static_assert(sizeof(defaultInline_) / sizeof(defaultInline_[0]) == static_cast<unsigned int>(Wt::DomElementType::UNKNOWN), "defaultInline_ should be the same size as the number of dom elements (excluding unknown and other)");
#endif // WT_TARGET_JAVA
}
namespace Wt {
LOGGER("DomElement");
#if defined(WT_THREADED) || defined(WT_TARGET_JAVA)
std::atomic<unsigned> DomElement::nextId_(0);
#else
unsigned DomElement::nextId_ = 0;
#endif
DomElement *DomElement::createNew(DomElementType type)
{
DomElement *e = new DomElement(Mode::Create, type);
return e;
}
DomElement *DomElement::getForUpdate(const std::string& id,
DomElementType type)
{
if (id.empty())
throw WException("Cannot update widget without id");
DomElement *e = new DomElement(Mode::Update, type);
e->id_ = id;
return e;
}
DomElement *DomElement::updateGiven(const std::string& var,
DomElementType type)
{
DomElement *e = new DomElement(Mode::Update, type);
e->var_ = var;
return e;
}
DomElement *DomElement::getForUpdate(const WObject *object,
DomElementType type)
{
return getForUpdate(object->id(), type);
}
DomElement::DomElement(Mode mode, DomElementType type)
: mode_(mode),
wasEmpty_(mode_ == Mode::Create),
removeAllChildren_(-1),
minMaxSizeProperties_(false),
unstubbed_(false),
unwrapped_(false),
replaced_(nullptr),
insertBefore_(nullptr),
type_(type),
numManipulations_(0),
timeOut_(-1),
timeOutJSRepeat_(-1),
globalUnfocused_(false)
{ }
DomElement::~DomElement()
{
for (unsigned i = 0; i < childrenToAdd_.size(); ++i)
delete childrenToAdd_[i].child;
for (unsigned i = 0; i < updatedChildren_.size(); ++i)
delete updatedChildren_[i];
delete replaced_;
delete insertBefore_;
}
void DomElement::setDomElementTagName(const std::string& name) {
this->elementTagName_ = name;
}
#ifndef WT_TARGET_JAVA
#define toChar(b) char(b)
#else
unsigned char toChar(int b) {
return (unsigned char)b;
}
#endif
std::string DomElement::urlEncodeS(const std::string& url,
const std::string &allowed)
{
WStringStream result;
#ifdef WT_TARGET_JAVA
std::vector<unsigned char> bytes;
try {
bytes = url.getBytes("UTF-8");
} catch (UnsupportedEncodingException& e) {
// eat silly UnsupportedEncodingException
}
#else
const std::string& bytes = url;
#endif
for (unsigned i = 0; i < bytes.size(); ++i) {
unsigned char c = toChar(bytes[i]);
if (c <= 31 || c >= 127 || unsafeChars_.find(c) != std::string::npos) {
if (allowed.find(c) != std::string::npos) {
result << (char)c;
} else {
result << '%';
result << hexLookup(c >> 4);
result << hexLookup(c);
}
} else
result << (char)c;
}
return result.str();
}
std::string DomElement::urlEncodeS(const std::string& url)
{
return urlEncodeS(url, std::string());
}
void DomElement::setType(DomElementType type)
{
type_ = type;
}
void DomElement::setWasEmpty(bool how)
{
wasEmpty_ = how;
}
void DomElement::updateInnerHtmlOnly()
{
mode_ = Mode::Update;
assert(replaced_ == nullptr);
assert(insertBefore_ == nullptr);
attributes_.clear();
removedAttributes_.clear();
eventHandlers_.clear();
for (PropertyMap::iterator i = properties_.begin(); i != properties_.end();) {
if ( i->first == Property::InnerHTML
|| i->first == Property::Target)
++i;
else
Utils::eraseAndNext(properties_, i);
}
}
void DomElement::addChild(DomElement *child)
{
if (child->mode() == Mode::Create) {
numManipulations_ += 2; // cannot be short-cutted
// Omit self closing tags from adding immediate HTML children, add them later
if (wasEmpty_ && canWriteInnerHTML(WApplication::instance()) && !isSelfClosingTag(type())) {
child->asHTML(childrenHtml_, javaScript_, timeouts_);
delete child;
} else {
childrenToAdd_.push_back(ChildInsertion(-1, child));
}
} else
updatedChildren_.push_back(child);
}
void DomElement::saveChild(const std::string& id)
{
childrenToSave_.push_back(id);
}
void DomElement::setAttribute(const std::string& attribute,
const std::string& value)
{
++numManipulations_;
attributes_[attribute] = value;
removedAttributes_.erase(attribute);
}
std::string DomElement::getAttribute(const std::string& attribute) const
{
AttributeMap::const_iterator i = attributes_.find(attribute);
if (i != attributes_.end())
return i->second;
else
return std::string();
}
void DomElement::removeAttribute(const std::string& attribute)
{
++numManipulations_;
attributes_.erase(attribute);
removedAttributes_.insert(attribute);
}
void DomElement::setEventSignal(const char *eventName,
const EventSignalBase& signal)
{
setEvent(eventName, signal.javaScript(),
signal.encodeCmd(), signal.isExposedSignal());
}
void DomElement::setEvent(const char *eventName,
const std::string& jsCode,
const std::string& signalName,
bool isExposed)
{
WApplication *app = WApplication::instance();
bool anchorClick = type() == DomElementType::A
&& eventName == WInteractWidget::CLICK_SIGNAL;
WStringStream js;
if (isExposed || anchorClick || !jsCode.empty()) {
js << "var e=event||window.event,";
js << "o=this;";
if (anchorClick)
js << "if(e.ctrlKey||e.metaKey||e.shiftKey||(" WT_CLASS ".button(e) > 1))"
"return true;else{";
/*
* This order, first JavaScript and then event propagation is important
* for WCheckBox where the tristate state is cleared before propagating
* its value
*/
js << jsCode;
if (isExposed)
js << app->javaScriptClass() << "._p_.update(o,'"
<< signalName << "',e,true);";
if (anchorClick)
js << "}";
}
++numManipulations_;
eventHandlers_[eventName] = EventHandler(js.str(), signalName);
}
void DomElement::setEvent(const char *eventName, const std::string& jsCode)
{
eventHandlers_[eventName] = EventHandler(jsCode, std::string());
}
void DomElement::addEvent(const char *eventName, const std::string& jsCode)
{
eventHandlers_[eventName].jsCode += jsCode;
}
DomElement::EventAction::EventAction(const std::string& aJsCondition,
const std::string& aJsCode,
const std::string& anUpdateCmd,
bool anExposed)
: jsCondition(aJsCondition),
jsCode(aJsCode),
updateCmd(anUpdateCmd),
exposed(anExposed)
{ }
void DomElement::setEvent(const char *eventName,
const std::vector<EventAction>& actions)
{
WStringStream code;
for (unsigned i = 0; i < actions.size(); ++i) {
if (!actions[i].jsCondition.empty())
code << "if(" << actions[i].jsCondition << "){";
/*
* This order, first JavaScript and then event propagation is important
* for WCheckBox where the tristate state is cleared before propagating
* its value
*/
code << actions[i].jsCode;
if (actions[i].exposed)
code << WApplication::instance()->javaScriptClass()
<< "._p_.update(o,'" << actions[i].updateCmd << "',e,true);";
if (!actions[i].jsCondition.empty())
code << "}";
}
setEvent(eventName, code.str(), "");
}
void DomElement::processProperties(WApplication *app) const
{
if (minMaxSizeProperties_
&& app->environment().agent() == UserAgent::IE6) {
DomElement *self = const_cast<DomElement *>(this);
PropertyMap::iterator w = self->properties_.find(Property::StyleWidth);
PropertyMap::iterator minw = self->properties_.find(Property::StyleMinWidth);
PropertyMap::iterator maxw = self->properties_.find(Property::StyleMaxWidth);
if (minw != self->properties_.end() || maxw != self->properties_.end()) {
if (w == self->properties_.end()) {
WStringStream expr;
expr << WT_CLASS ".IEwidth(this,";
if (minw != self->properties_.end()) {
expr << '\'' << minw->second << '\'';
self->properties_.erase(Property::StyleMinWidth); // C++: could be minw
} else
expr << "'0px'";
expr << ',';
if (maxw != self->properties_.end()) {
expr << '\''<< maxw->second << '\'';
self->properties_.erase(Property::StyleMaxWidth); // C++: could be maxw
} else
expr << "'100000px'";
expr << ")";
self->properties_.erase(Property::StyleWidth);
self->properties_[Property::StyleWidthExpression] = expr.str();
}
}
PropertyMap::iterator i = self->properties_.find(Property::StyleMinHeight);
if (i != self->properties_.end()) {
self->properties_[Property::StyleHeight] = i->second;
}
}
}
void DomElement::processEvents(WT_MAYBE_UNUSED WApplication* app) const
{
DomElement *self = const_cast<DomElement *>(this);
const char *S_keypress = WInteractWidget::KEYPRESS_SIGNAL;
EventHandlerMap::const_iterator keypress = eventHandlers_.find(S_keypress);
if (keypress != eventHandlers_.end() && !keypress->second.jsCode.empty())
Utils::access(self->eventHandlers_, S_keypress).jsCode
= "if (" WT_CLASS ".isKeyPress(event)){"
+ Utils::access(self->eventHandlers_, S_keypress).jsCode
+ '}';
}
void DomElement::setTimeout(int msec, bool jsRepeat)
{
++numManipulations_;
timeOut_ = msec;
timeOutJSRepeat_ = jsRepeat ? msec : -1;
}
void DomElement::setTimeout(int delay, int interval)
{
++numManipulations_;
timeOut_ = delay;
timeOutJSRepeat_ = interval;
}
void DomElement::callJavaScript(const std::string& jsCode,
bool evenWhenDeleted)
{
// Bug #12283: Ensure the js string isn't empty (for back())
if (jsCode.empty()) {
return;
}
++numManipulations_;
// Bug #12006: For safety always append semicolon
std::string terminatedJsCode = jsCode;
if (jsCode.back() != ';') {
terminatedJsCode += ";";
}
if (!evenWhenDeleted)
javaScript_ << terminatedJsCode << '\n';
else
javaScriptEvenWhenDeleted_ += terminatedJsCode;
}
void DomElement::setProperties(const PropertyMap& properties)
{
for (PropertyMap::const_iterator i = properties.begin();
i != properties.end(); ++i)
setProperty(i->first, i->second);
}
void DomElement::clearProperties()
{
numManipulations_ -= properties_.size();
properties_.clear();
}
void DomElement::setProperty(Property property, const std::string& value)
{
++numManipulations_;
properties_[property] = value;
if (property >= Property::StyleMinWidth && property <= Property::StyleMaxHeight)
minMaxSizeProperties_ = true;
}
void DomElement::addPropertyWord(Property property, const std::string& value)
{
PropertyMap::const_iterator i = properties_.find(property);
if (i != properties_.end()) {
Utils::SplitSet words;
Utils::split(words, i->second, " ", true);
if (words.find(value) != words.end())
return;
}
setProperty(property, Utils::addWord(getProperty(property), value));
}
std::string DomElement::getProperty(Property property) const
{
PropertyMap::const_iterator i = properties_.find(property);
if (i != properties_.end())
return i->second;
else
return std::string();
}
void DomElement::removeProperty(Property property)
{
properties_.erase(property);
}
void DomElement::setId(const std::string& id)
{
++numManipulations_;
id_ = id;
}
void DomElement::setName(const std::string& name)
{
++numManipulations_;
id_ = name;
setAttribute("name", name);
}
void DomElement::insertChildAt(DomElement *child, int pos)
{
++numManipulations_;
childrenToAdd_.push_back(ChildInsertion(pos, child));
}
void DomElement::insertBefore(DomElement *sibling)
{
++numManipulations_;
insertBefore_ = sibling;
}
void DomElement::removeFromParent()
{
callJavaScript(WT_CLASS ".remove('" + id() + "');", true);
}
void DomElement::removeAllChildren(int firstChild)
{
++numManipulations_;
removeAllChildren_ = firstChild;
wasEmpty_ = firstChild == 0;
}
void DomElement::replaceWith(DomElement *newElement)
{
++numManipulations_;
replaced_ = newElement;
}
void DomElement::unstubWith(DomElement *newElement, bool hideWithDisplay)
{
replaceWith(newElement);
unstubbed_ = true;
hideWithDisplay_ = hideWithDisplay;
}
void DomElement::unwrap()
{
++numManipulations_;
unwrapped_ = true;
}
void DomElement::callMethod(const std::string& method)
{
++numManipulations_;
if (var_.empty())
javaScript_ << WT_CLASS << ".$('" << id_ << "').";
else
javaScript_ << var_ << '.';
javaScript_ << method << ";\n";
}
void DomElement::jsStringLiteral(WStringStream& out, const std::string& s,
char delimiter)
{
EscapeOStream sout(out);
jsStringLiteral(sout, s, delimiter);
}
void DomElement::htmlAttributeValue(WStringStream& out, const std::string& s)
{
EscapeOStream sout(out);
sout.pushEscape(EscapeOStream::HtmlAttribute);
sout << s;
}
void DomElement::fastJsStringLiteral(EscapeOStream& outRaw,
const EscapeOStream& outEscaped,
const std::string& s)
{
outRaw << '\'';
outRaw.append(s, outEscaped);
outRaw << '\'';
}
void DomElement::jsStringLiteral(EscapeOStream& out, const std::string& s,
char delimiter)
{
out << delimiter;
out.pushEscape(delimiter == '\'' ?
EscapeOStream::JsStringLiteralSQuote :
EscapeOStream::JsStringLiteralDQuote);
out << s;
out.popEscape();
out << delimiter;
}
void DomElement::fastHtmlAttributeValue(EscapeOStream& outRaw,
const EscapeOStream& outEscaped,
const std::string& s)
{
outRaw << '"';
outRaw.append(s, outEscaped);
outRaw << '"';
}
std::string DomElement::cssStyle() const
{
if (properties_.empty())
return std::string();
EscapeOStream style;
const std::string *styleProperty = nullptr;
for (PropertyMap::const_iterator j = properties_.begin();
j != properties_.end(); ++j) {
unsigned p = static_cast<unsigned int>(j->first);
if (j->first == Property::Style)
styleProperty = &j->second;
else if ((p >= static_cast<unsigned int>(Property::StylePosition)) &&
(p < static_cast<unsigned int>(Property::LastPlusOne))) {
if (!j->second.empty()) {
style << cssName(j->first)
<< ':' << j->second << ';';
if (p >= static_cast<unsigned int>(Property::StyleBoxSizing)) {
WApplication *app = WApplication::instance();
if (app) {
if (app->environment().agentIsGecko())
style << "-moz-";
else if (app->environment().agentIsWebKit())
style << "-webkit-";
}
style << cssName(j->first)
<< ':' << j->second << ';';
}
}
} else if (j->first == Property::StyleWidthExpression) {
style << "width:expression(" << j->second << ");";
}
}
if (styleProperty)
style << *styleProperty;
return style.c_str();
}
void DomElement::setJavaScriptEvent(EscapeOStream& out,
const char *eventName,
const EventHandler& handler,
WApplication *app) const
{
// events on the dom root container are events received by the whole
// document when no element has focus
unsigned fid = nextId_++;
out << "function f" << fid << "(event) { ";
out << handler.jsCode;
out << "}\n";
if (globalUnfocused_) {
out << app->javaScriptClass()
<< "._p_.bindGlobal('" << std::string(eventName) <<"', '" << id_ << "', f" << fid
<< ")\n";
return;
} else {
declare(out);
out << var_;
}
if (eventName == WInteractWidget::WHEEL_SIGNAL &&
app->environment().agentIsIE() &&
static_cast<unsigned int>(app->environment().agent()) >=
static_cast<unsigned int>(UserAgent::IE9))
out << ".addEventListener('wheel', f" << fid << ", false);\n";
else
out << ".on" << const_cast<char *>(eventName) << "=f" << fid << ";\n";
}
void DomElement::asHTML(EscapeOStream& out,
EscapeOStream& javaScript,
std::vector<TimeoutEvent>& timeouts,
bool openingTagOnly) const
{
if (mode_ != Mode::Create)
throw WException("DomElement::asHTML() called with ModeUpdate");
WApplication *app = WApplication::instance();
processEvents(app);
processProperties(app);
EventHandlerMap::const_iterator clickEvent
= eventHandlers_.find(WInteractWidget::CLICK_SIGNAL);
bool needButtonWrap
= (!app->environment().ajax()
&& (clickEvent != eventHandlers_.end())
&& (!clickEvent->second.signalName.empty())
&& (!app->environment().agentIsSpiderBot()));
bool isSubmit = needButtonWrap;
DomElementType renderedType = type_;
if (needButtonWrap) {
if (type_ == DomElementType::BUTTON) {
/*
* We don't need to wrap a button: we can just modify the attributes
* type name and value. This avoid layout problems.
*
* Note that IE posts the button text instead of the value. We fix
* this by encoding the value into the name.
*
* IE6 hell: IE will post all submit buttons, not just the one clicked.
* We should therefore really be using input
*/
DomElement *self = const_cast<DomElement *>(this);
self->setAttribute("type", "submit");
self->setAttribute("name", "signal=" + clickEvent->second.signalName);
needButtonWrap = false;
} else if (type_ == DomElementType::IMG) {
/*
* We don't need to wrap an image: we can substitute it for an input
* type image. This avoid layout problems.
*/
renderedType = DomElementType::INPUT;
DomElement *self = const_cast<DomElement *>(this);
self->setAttribute("type", "image");
self->setAttribute("name", "signal=" + clickEvent->second.signalName);
needButtonWrap = false;
}
}
/*
* We also should not wrap anchors, map area elements and form elements.
*/
if (needButtonWrap) {
if ( type_ == DomElementType::AREA
|| type_ == DomElementType::INPUT
|| type_ == DomElementType::SELECT)
needButtonWrap = false;
if (type_ == DomElementType::A) {
std::string href = getAttribute("href");
/*
* If we're IE7/8 or there is a real URL, then we don't wrap
*/
if (app->environment().agent() == UserAgent::IE7 ||
app->environment().agent() == UserAgent::IE8 ||
href.length() > 1)
needButtonWrap = false;
else if (app->theme()->canStyleAnchorAsButton()) {
DomElement *self = const_cast<DomElement *>(this);
self->setAttribute("href", app->url(app->internalPath())
+ "&signal=" + clickEvent->second.signalName);
needButtonWrap = false;
}
} else if (type_ == DomElementType::AREA) {
DomElement *self = const_cast<DomElement *>(this);
self->setAttribute("href", app->url(app->internalPath())
+ "&signal=" + clickEvent->second.signalName);
}
}
const bool supportButton = true;
if (!supportButton && type_ == DomElementType::BUTTON) {
renderedType = DomElementType::INPUT;