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sciter-x-dom.hpp
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sciter-x-dom.hpp
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/*
* The Sciter Engine of Terra Informatica Software, Inc.
* http://sciter.com
*
* The code and information provided "as-is" without
* warranty of any kind, either expressed or implied.
*
* (C) 2003-2015, Terra Informatica Software, Inc.
*/
/*
* DOM access methods, C++ interface, sciter::dom namespace
*/
#ifndef __sciter_dom_hpp__
#define __sciter_dom_hpp__
#pragma warning(disable:4786) //identifier was truncated...
#pragma warning(disable:4100) //unreferenced formal parameter
#include "sciter-x-dom.h"
#include <algorithm>
#include <vector>
/**sciter namespace.*/
namespace sciter
{
/**dom namespace.*/
namespace dom
{
/**callback structure.
* Used with #sciter::dom::element::select() function.
**/
struct callback
{
/**Is called for every element that match criteria specified when calling to #sciter::dom::element::select() function.*/
virtual bool on_element(HELEMENT he) = 0;
};
class element;
/**DOM node - element, comment, text */
class node
{
HNODE hn;
protected:
void use(HNODE h) { hn = ( SciterNodeAddRef(h) == SCDOM_OK)? h: 0; }
void unuse() { if(hn) SciterNodeRelease(hn); hn = 0; }
void set(HNODE h) { unuse(); use(h); }
public:
node(): hn(0) {}
node(HNODE h) { use(h); }
node(HELEMENT h);
node(const element& el);
node(const node& n) { use(n.hn); }
~node() { unuse(); }
operator HNODE() const { return hn; }
operator bool() const { return hn != 0; }
node& operator = (HNODE h) { set(h); return *this; }
node& operator = (HELEMENT h);
node& operator = (const node& n) { set(n.hn); return *this; }
node& operator = (const element& n);
bool operator == (const node& rs ) const { return hn == rs.hn; }
bool operator == (HNODE rs ) const { return hn == rs; }
bool operator != (const node& rs ) const { return hn != rs.hn; }
bool operator != (HNODE rs ) const { return hn != rs; }
bool is_valid() const { return hn != 0; }
HELEMENT parent( ) const;
HNODE next_sibling() const; // sibling
HNODE prev_sibling() const; // sibling
HNODE first_child() const; // child
HNODE last_child() const; // child
unsigned int children_count() const;
HNODE operator[](unsigned int idx) const;
HNODE operator[](int idx) const { return this->operator[](unsigned(idx)); }
bool is_text() const;
bool is_comment() const;
bool is_element() const;
HELEMENT to_element() const;
// get/set characters of text/comment node
sciter::string text() const; // get text as sciter::string (utf16)
void text(LPCWSTR text, UINT textLength) const; // set text
void text(const sciter::string& s) { text(s.c_str(),UINT(s.length())); }
void remove(); // remove it from the DOM and release reference
void detach(); // detach it from the DOM and keep reference
static node make_text_node(LPCWSTR text, UINT textLength);
static node make_comment_node(LPCWSTR text, UINT textLength);
void append(HNODE hn); // as a last child node
void prepend(HNODE hn); // as a first child node
void insert_before(HNODE hn); // as a previous sibling
void insert_after(HNODE hn); // as a next sibling
// fetch DOM node reference from SCITER_VALUE envelope
static node from_value(const SCITER_VALUE& v) {
HNODE hn = 0;
SCDOM_RESULT r = SciterNodeUnwrap(&v, &hn);
assert(r == SCDOM_OK); (void)r;
return node(hn);
}
// wrap DOM node reference into sciter::value envelope
SCITER_VALUE to_value() const {
SCITER_VALUE v;
SCDOM_RESULT r = SciterNodeWrap(&v, hn);
assert(r == SCDOM_OK); (void)r;
return v;
}
};
/**DOM element.*/
class element
{
protected:
HELEMENT he;
void use(HELEMENT h) { he = ( Sciter_UseElement(h) == SCDOM_OK)? h: 0; }
void unuse() { if(he) Sciter_UnuseElement(he); he = 0; }
void set(HELEMENT h) { unuse(); use(h); }
public:
/**Construct \c undefined element .
**/
element(): he(0) { }
/**Construct \c element from existing element handle.
* \param h \b #HELEMENT
**/
element(HELEMENT h) { use(h); }
/**Copy constructor;
* \param e \b #element
**/
element(const element& e) { use(e.he); }
element(const node& e);
operator bool() const { return he != 0; }
operator HELEMENT() const { return he; }
operator HNODE() const {
HNODE hn = 0;
SciterNodeCastFromElement(he,&hn); // always succeedes
return hn;
}
/**Destructor.*/
~element() { unuse(); }
/**Assign \c element an \c #HELEMENT
* \param h \b #HELEMENT
* \return \b #element&
**/
element& operator = (HELEMENT h) { set(h); return *this; }
/**Assign \c element another \c #element
* \param e \b #element
* \return \b #element&
**/
element& operator = (const element& e) { set(e.he); return *this; }
/**Test equality of this and another \c #element's
* \param rs \b const \b #element
* \return \b bool, true if elements are equal, false otherwise
**/
bool operator == (const element& rs ) const { return he == rs.he; }
bool operator == (HELEMENT rs ) const { return he == rs; }
/**Test equality of this and another \c #element's
* \param rs \b const \b #element
* \return \b bool, true if elements are not equal, false otherwise
**/
bool operator != (const element& rs ) const { return he != rs.he; }
bool operator != (HELEMENT rs ) const { return he != rs; }
/**Test whether element is valid.
* \return \b bool, true if element is valid, false otherwise
**/
bool is_valid() const { return he != 0; }
/**Get number of child elements.
* \return \b int, number of child elements
**/
unsigned int children_count() const
{
UINT count = 0;
SciterGetChildrenCount(he, &count);
return count;
}
/**Get Nth child element.
* \param index \b unsigned \b int, number of the child element
* \return \b #HELEMENT, child element handle
**/
HELEMENT child( unsigned int index ) const
{
HELEMENT child = 0;
SciterGetNthChild(he, index, &child);
return child;
}
/**Get parent element.
* \return \b #HELEMENT, handle of the parent element
**/
HELEMENT parent( ) const
{
HELEMENT hparent = 0;
SciterGetParentElement(he, &hparent);
return hparent;
}
/**Get index of this element in its parent collection.
* \return \b unsigned \b int, index of this element in its parent collection
**/
unsigned int index( ) const
{
UINT index = 0;
SciterGetElementIndex(he, &index);
return index;
}
/**Get number of the attributes.
* \return \b unsigned \b int, number of the attributes
**/
unsigned int get_attribute_count( ) const
{
UINT n = 0;
SciterGetAttributeCount(he, &n);
return n;
}
/**Get attribute value by its index.
* \param n \b unsigned \b int, number of the attribute
* \return \b const \b WCHAR*, value of the n-th attribute
**/
sciter::string get_attribute( unsigned int n ) const
{
sciter::string s;
SCDOM_RESULT r = SciterGetNthAttributeValueCB(he, n, &_LPCWSTR2STRING, &s);
assert(r == SCDOM_OK); (void)r;
return s;
}
/**Get attribute name by its index.
* \param n \b unsigned \b int, number of the attribute
* \return \b const \b char*, name of the n-th attribute
**/
sciter::astring get_attribute_name( unsigned int n ) const
{
sciter::astring s;
SCDOM_RESULT r = SciterGetNthAttributeNameCB(he, n, &_LPCSTR2ASTRING, &s);
assert(r == SCDOM_OK); (void)r;
return s;
}
/**Get attribute value by name.
* \param name \b const \b char*, name of the attribute
* \return \b sciter::string, value of the n-th attribute
**/
sciter::string get_attribute( const char* name, const WCHAR* def_value = 0 ) const
{
sciter::string s;
SCDOM_RESULT r = SciterGetAttributeByNameCB(he, name, &_LPCWSTR2STRING, &s);
if(r == SCDOM_OK_NOT_HANDLED && def_value)
return sciter::string(def_value);
return s;
}
/**Add or replace attribute.
* \param name \b const \b char*, name of the attribute
* \param value \b const \b WCHAR*, name of the attribute
**/
void set_attribute( const char* name, const WCHAR* value )
{
SciterSetAttributeByName(he, name, value);
}
/**Get attribute integer value by name.
* \param name \b const \b char*, name of the attribute
* \return \b int , value of the attribute
**/
int get_attribute_int( const char* name, int def_val = 0 ) const
{
sciter::string txt = get_attribute(name);
if(txt.length() == 0) return def_val;
aux::wchars wc = aux::chars_of(txt);
return aux::to_int(wc);
}
/**Remove attribute.
* \param name \b const \b char*, name of the attribute
**/
void remove_attribute( const char* name )
{
SciterSetAttributeByName(he, name, 0);
}
/**Get style attribute of the element by its name.
* \param name \b const \b char*, name of the style attribute, e.g. "background-color"
* \return \b const \b WCHAR*, value of the style attribute
**/
sciter::string get_style_attribute( const char* name ) const
{
sciter::string s;
SciterGetStyleAttributeCB(he, name,&_LPCWSTR2STRING, &s);
return s;
}
/**Set style attribute.
* \param name \b const \b char*, name of the style attribute
* \param value \b const \b WCHAR*, value of the style attribute
*
* \par Example:
* \code e.set_style_attribute("background-color", L"red"); \endcode
**/
void set_style_attribute( const char* name, const WCHAR* value ) const
{
SciterSetStyleAttribute(he, name, value);
}
/**Get root DOM element of the Sciter document.
* \param hSciterWnd \b HWINDOW, Sciter window
* \return \b #HELEMENT, root element
* \see also \b #root
**/
static HELEMENT root_element(HWINDOW hSciterWnd)
{
HELEMENT h = 0;
SciterGetRootElement(hSciterWnd,&h);
return h;
}
/**Get focus DOM element of the Sciter document.
* \param hSciterWnd \b HWINDOW, Sciter window
* \return \b #HELEMENT, focus element
*
* COMMENT: to set focus use: set_state(STATE_FOCUS)
*
**/
static HELEMENT focus_element(HWINDOW hSciterWnd)
{
HELEMENT h = 0;
SciterGetFocusElement(hSciterWnd,&h);
return h;
}
/**Find DOM element of the Sciter document by coordinates.
* \param hSciterWnd \b HWINDOW, Sciter window
* \param clientPt \b POINT, coordinates.
* \return \b #HELEMENT, found element handle or zero
**/
static HELEMENT find_element(HWINDOW hSciterWnd, POINT clientPt)
{
HELEMENT h = 0;
SciterFindElement(hSciterWnd, clientPt, &h);
return h;
}
/**Set mouse capture.
* After call to this function all mouse events will be targeted to this element.
* To remove mouse capture call #sciter::dom::element::release_capture().
**/
void set_capture() { SciterSetCapture(he); }
/**Release mouse capture.
* Mouse capture can be set with #element:set_capture()
**/
void release_capture() { SciterReleaseCapture(he); }
inline static SBOOL SC_CALLBACK callback_func( HELEMENT he, LPVOID param )
{
callback *pcall = (callback *)param;
return (SBOOL)pcall->on_element(he); // SBOOL(true) - stop enumeration
}
inline void select_elements( callback *pcall,
const char* selectors // CSS selectors, comma separated list
) const
{
SciterSelectElements( he, selectors, callback_func, pcall);
}
/**Get element by id.
* \param id \b char*, value of the "id" attribute.
* \return \b #HELEMENT, handle of the first element with the "id" attribute equal to given.
**/
HELEMENT get_element_by_id(const char* id) const
{
if(!id) return 0;
return find_first( "[id='%s']", id );
}
HELEMENT get_element_by_id(const WCHAR* id) const
{
if(!id) return 0;
return find_first( "[id='%S']", id );
}
/**Apply changes and refresh element area in its window.
* \param[in] render_now \b bool, if true element will be redrawn immediately.
**/
void update( bool render_now = false ) const
{
SciterUpdateElement(he, (SBOOL)render_now);
}
void refresh( RECT rc ) const
{
SciterRefreshElementArea(he, rc);
}
void refresh( ) const
{
RECT rc = get_location(SELF_RELATIVE | CONTENT_BOX);
refresh( rc );
}
/**Get next sibling element.
* \return \b #HELEMENT, handle of the next sibling element if it exists or 0 otherwise
**/
HELEMENT next_sibling() const
{
unsigned int idx = index() + 1;
element pel = parent();
if(!pel.is_valid())
return 0;
if( idx >= pel.children_count() )
return 0;
return pel.child(idx);
}
/**Get previous sibling element.
* \return \b #HELEMENT, handle of previous sibling element if it exists or 0 otherwise
**/
HELEMENT prev_sibling() const
{
int idx = static_cast<int>(index()) - 1;
element pel = parent();
if(!pel.is_valid())
return 0;
if( idx < 0 )
return 0;
return pel.child(static_cast<unsigned>(idx));
}
/**Get first sibling element.
* \return \b #HELEMENT, handle of the first sibling element if it exists or 0 otherwise
**/
HELEMENT first_sibling() const
{
element pel = parent();
if(!pel.is_valid())
return 0;
return pel.child(0);
}
/**Get last sibling element.
* \return \b #HELEMENT, handle of last sibling element if it exists or 0 otherwise
**/
HELEMENT last_sibling() const
{
element pel = parent();
if(!pel.is_valid())
return 0;
return pel.child(pel.children_count() - 1);
}
/**Get root of the element
* \return \b #HELEMENT, handle of document root element (html)
**/
HELEMENT root() const
{
element pel = parent();
if(pel.is_valid())
return pel.root();
return he;
}
/**Get bounding rectangle of the element.
* \param root_relative \b bool, if true function returns location of the
* element relative to Sciter window, otherwise the location is given
* relative to first scrollable container.
* \return \b RECT, bounding rectangle of the element.
**/
RECT get_location(unsigned int area = ROOT_RELATIVE | CONTENT_BOX) const
{
RECT rc = {0,0,0,0};
SciterGetElementLocation(he,&rc, area);
return rc;
}
/** Test if point is inside shape rectangle of the element.
client_pt - client rect relative point
**/
bool is_inside( POINT client_pt ) const
{
RECT rc = get_location(ROOT_RELATIVE | BORDER_BOX);
return client_pt.x >= rc.left
&& client_pt.x < rc.right
&& client_pt.y >= rc.top
&& client_pt.y < rc.bottom;
}
/**Scroll this element to view.
**/
void scroll_to_view(bool toTopOfView = false, bool smooth = false)
{
UINT flags = 0;
if(toTopOfView) flags |= SCROLL_TO_TOP;
if(smooth) flags |= SCROLL_SMOOTH;
SciterScrollToView(he, flags );
}
void get_scroll_info(POINT& scroll_pos, RECT& view_rect, SIZE& content_size)
{
SCDOM_RESULT r = SciterGetScrollInfo(he, &scroll_pos, &view_rect, &content_size);
assert(r == SCDOM_OK); (void)r;
}
void set_scroll_pos(POINT scroll_pos)
{
SCDOM_RESULT r = SciterSetScrollPos(he, scroll_pos, true);
assert(r == SCDOM_OK); (void)r;
}
/** get min-intrinsic and max-intrinsic widths of the element. */
void get_intrinsic_widths(int& min_width,int& max_width)
{
SCDOM_RESULT r = SciterGetElementIntrinsicWidths(he, &min_width, &max_width);
assert(r == SCDOM_OK); (void)r;
}
/** get min-intrinsic height of the element calculated for forWidth. */
void get_intrinsic_height(int for_width, int& min_height)
{
SCDOM_RESULT r = SciterGetElementIntrinsicHeight(he, for_width, &min_height);
assert(r == SCDOM_OK); (void)r;
}
/**Get element's tag name.
* \return \b sciter::astring, tag name of the element
*
* \par Example:
* For <div> tag function will return "div".
**/
sciter::astring get_element_type() const
{
sciter::astring s;
SciterGetElementTypeCB(he, &_LPCSTR2ASTRING, &s);
return s;
}
// alias
sciter::astring get_tag() const { return get_element_type(); }
/**Get HWINDOW of containing window.
* \param root_window \b bool, handle of which window to get:
* - true - Sciter window
* - false - nearest windowed parent element.
* \return \b HWINDOW
**/
HWINDOW get_element_hwnd(bool root_window) const
{
HWINDOW hwnd = 0;
SciterGetElementHwnd(he,&hwnd, (SBOOL)root_window);
return hwnd;
}
void attach_hwnd(HWINDOW child)
{
SCDOM_RESULT r = SciterAttachHwndToElement(he,child);
assert( r == SCDOM_OK ); (void)r;
}
/**Get element UID - identifier suitable for storage.
* \return \b UID
**/
UINT get_element_uid() const
{
UINT uid = 0;
SciterGetElementUID(he,&uid);
return uid;
}
/**Get element handle by its UID.
* \param hSciterWnd \b HWINDOW, Sciter window
* \param uid \b UINT, uid of the element
* \return \b #HELEMENT, handle of element with the given uid or 0 if not found
**/
static HELEMENT element_by_uid(HWINDOW hSciterWnd, UINT uid)
{
HELEMENT h = 0;
SciterGetElementByUID(hSciterWnd, uid,&h);
return h;
}
/**Combine given URL with URL of the document element belongs to.
* \param[in, out] inOutURL \b LPWSTR, at input this buffer contains
* zero-terminated URL to be combined, after function call it contains
* zero-terminated combined URL
* \param bufferSize \b UINT, size of the buffer pointed by \c inOutURL
**/
void combine_url(LPWSTR inOutURL, UINT bufferSize) const
{
SciterCombineURL(he,inOutURL,bufferSize);
}
#ifdef CPP11
sciter::string combine_url(const sciter::string& relative_url) const
{
WCHAR buffer[4096] = {0};
//wcsncpy_s(buffer,relative_url,min(4096,relative_url.length()));
std::size_t length = relative_url.length() < 4095u ? relative_url.length(): 4095u ;
std::copy_n(relative_url.cbegin(), length, buffer);
buffer[length] = 0;
SciterCombineURL(he,buffer,4096);
return sciter::string(buffer);
}
#endif
/**Set inner or outer html of the element.
* \param html \b const \b unsigned \b char*, UTF-8 encoded string containing html text
* \param html_length \b size_t, length in bytes of \c html
* \param where \b int, possible values are:
* - SIH_REPLACE_CONTENT - replace content of the element
* - SIH_INSERT_AT_START - insert html before first child of the element
* - SIH_APPEND_AFTER_LAST - insert html after last child of the element
**/
void set_html( const unsigned char* html, size_t html_length, int where = SIH_REPLACE_CONTENT)
{
if(html == 0 || html_length == 0)
clear();
else
{
SCDOM_RESULT r = SciterSetElementHtml(he, html, UINT(html_length), where);
assert(r == SCDOM_OK); (void)r;
}
}
// html as utf8 bytes sequence
sciter::astring
get_html( bool outer = true) const
{
sciter::astring s;
SCDOM_RESULT r = SciterGetElementHtmlCB(he, SBOOL(outer), &_LPCBYTE2ASTRING,&s);
assert(r == SCDOM_OK); (void)r;
return s;
}
// get text as sciter::string (utf16)
sciter::string text() const
{
sciter::string s;
SCDOM_RESULT r = SciterGetElementTextCB(he, &_LPCWSTR2STRING, &s);
assert(r == SCDOM_OK); (void)r;
return s;
}
void set_text(const WCHAR* utf16, size_t utf16_length)
{
SCDOM_RESULT r = SciterSetElementText(he, utf16, UINT(utf16_length));
assert(r == SCDOM_OK); (void)r;
}
void set_text(const WCHAR* t)
{
assert(t);
if( t ) set_text( t, str_length(t) );
}
void clear() // clears content of the element
{
SCDOM_RESULT r = SciterSetElementText(he, 0, 0);
assert(r == SCDOM_OK); (void)r;
}
HELEMENT find_first( const char* selector, ... ) const
{
char buffer[2049]; buffer[0]=0;
va_list args;
va_start ( args, selector );
vsnprintf( buffer, sizeof(buffer), selector, args );
va_end ( args );
find_first_callback find_first;
select_elements( &find_first, buffer); // find first element satisfying given CSS selector
//assert(find_first.hfound);
return find_first.hfound;
}
void find_all( callback* cb, const char* selector, ... ) const
{
char buffer[2049]; buffer[0]=0;
va_list args;
va_start ( args, selector );
vsnprintf( buffer, sizeof(buffer), selector, args );
va_end ( args );
select_elements( cb, buffer); // find all elements satisfying given CSS selector
//assert(find_first.hfound);
}
#ifdef CPP11
std::vector<sciter::dom::element>
find_all(const char* selector, ...) const
{
struct each_callback : public sciter::dom::callback
{
std::vector<sciter::dom::element> elements;
virtual bool on_element(HELEMENT he) {
elements.push_back(sciter::dom::element(he));
return false; // no stop
}
};
each_callback cb;
this->find_all(&cb, selector);
return cb.elements;
}
#endif
// will find first parent satisfying given css selector(s)
HELEMENT find_nearest_parent(const char* selector, ...) const
{
char buffer[2049]; buffer[0]=0;
va_list args;
va_start ( args, selector );
vsnprintf( buffer, sizeof(buffer), selector, args );
va_end ( args );
HELEMENT heFound = 0;
SCDOM_RESULT r = SciterSelectParent(he, buffer, 0, &heFound);
assert(r == SCDOM_OK); (void)r;
return heFound;
}
// test this element against CSS selector(s)
bool test(const char* selector, ...) const
{
char buffer[2049]; buffer[0]=0;
va_list args;
va_start ( args, selector );
vsnprintf( buffer, sizeof(buffer), selector, args );
va_end ( args );
HELEMENT heFound = 0;
SCDOM_RESULT r = SciterSelectParent(he, buffer, 1, &heFound);
assert(r == SCDOM_OK); (void)r;
return heFound != 0;
}
/**Get UI state bits of the element as set of ELEMENT_STATE_BITS
**/
unsigned int get_state() const
{
UINT state = 0;
SCDOM_RESULT r = SciterGetElementState(he,&state);
assert(r == SCDOM_OK); (void)r;
return state; /*ELEMENT_STATE_BITS*/
}
/**Checks if particular UI state bits are set in the element.
**/
bool get_state(/*ELEMENT_STATE_BITS*/ unsigned int bits) const
{
UINT state = 0;
SCDOM_RESULT r = SciterGetElementState(he,&state);
assert(r == SCDOM_OK); (void)r;
return (state & bits) != 0;
}
/**Set UI state of the element with optional view update.
**/
void set_state(
/*ELEMENT_STATE_BITS*/ unsigned int bitsToSet,
/*ELEMENT_STATE_BITS*/ unsigned int bitsToClear = 0, bool update = true )
{
SCDOM_RESULT r = SciterSetElementState(he,bitsToSet,bitsToClear, SBOOL(update));
assert(r == SCDOM_OK); (void)r;
}
/** "deeply enabled" **/
bool enabled()
{
SBOOL b = false;
SCDOM_RESULT r = SciterIsElementEnabled(he,&b);
assert(r == SCDOM_OK); (void)r;
return b != 0;
}
/** "deeply visible" **/
bool visible()
{
SBOOL b = false;
SCDOM_RESULT r = SciterIsElementVisible(he,&b);
assert(r == SCDOM_OK); (void)r;
return b != 0;
}
void start_timer(unsigned int ms, void* timer_id = 0)
{
SCDOM_RESULT r = SciterSetTimer(he,ms,UINT_PTR(timer_id));
assert(r == SCDOM_OK); (void)r;
}
void stop_timer(void* timer_id = 0)
{
if(he)
{
SCDOM_RESULT r = SciterSetTimer(he,0,UINT_PTR(timer_id));
assert(r == SCDOM_OK); (void)r;
}
}
/** create brand new element with text (optional).
Example:
element div = element::create("div");
- will create DIV element,
element opt = element::create("option",L"Europe");
- will create OPTION element with text "Europe" in it.
**/
static element create(const char* tagname, const WCHAR* text = 0)
{
element e(0);
SCDOM_RESULT r = SciterCreateElement( tagname, text, &e.he ); // don't need 'use' here, as it is already "addrefed"
assert(r == SCDOM_OK); (void)r;
return e;
}
/** create brand new copy of this element. Element will be created disconected.
You need to call insert to inject it in some container.
Example:
element select = ...;
element option1 = ...;
element option2 = option1.clone();
select.insert(option2, option1.index() + 1);
- will create copy of option1 element (option2) and insert it after option1,
**/
element clone()
{
element e(0);
SCDOM_RESULT r = SciterCloneElement( he, &e.he ); // don't need 'use' here, as it is already "addrefed"
assert(r == SCDOM_OK); (void)r;
return e;
}
/** Insert element e at \i index position of this element.
**/
void insert( const element& e, unsigned int index )
{
SCDOM_RESULT r = SciterInsertElement( e.he, this->he, index );
assert(r == SCDOM_OK); (void)r;
}
/** Append element e as last child of this element.
**/
void append( const element& e ) { insert(e,0x7FFFFFFF); }
/** detach - remove this element from its parent
**/
void detach()
{
SCDOM_RESULT r = SciterDetachElement( he );
assert(r == SCDOM_OK); (void)r;
}
/** destroy - remove this element from its parent and destroy all behaviors
**/
void destroy()
{
HELEMENT t = he; he = 0;
SCDOM_RESULT r = SciterDeleteElement( t );
assert(r == SCDOM_OK); (void)r;
}
/** swap two elements in the DOM
**/
void swap(HELEMENT with)
{
SCDOM_RESULT r = SciterSwapElements(he, with);
assert(r == SCDOM_OK); (void)r;
}
/** traverse event - send it by sinking/bubbling on the
* parent/child chain of this element
**/
bool send_event(unsigned int event_code, uintptr_t reason = 0, HELEMENT heSource = 0)
{
SBOOL handled = false;
SCDOM_RESULT r = SciterSendEvent(he, event_code, heSource? heSource: he, reason, &handled);
assert(r == SCDOM_OK); (void)r;
return handled != 0;
}
/** post event - post it in the queue for later sinking/bubbling on the
* parent/child chain of this element.
* method returns immediately
**/
void post_event(unsigned int event_code, uintptr_t reason = 0, HELEMENT heSource = 0)
{
SCDOM_RESULT r = SciterPostEvent(he, event_code, heSource? heSource: he, reason);
assert(r == SCDOM_OK); (void)r;
}
bool fire_event(const BEHAVIOR_EVENT_PARAMS& evt, bool post = true)
{
SBOOL handled = false;
SCDOM_RESULT r = SciterFireEvent(&evt, post, &handled);
assert(r == SCDOM_OK); (void)r;
return handled != 0;
}
/** call method, invokes method in all event handlers attached to the element
**/
bool call_behavior_method(METHOD_PARAMS* p)
{
if(!is_valid())
return false;
return SciterCallBehaviorMethod(he,p) == SCDOM_OK;
}
void load_html(const WCHAR* url, HELEMENT initiator = 0)
{
load_data(url,RT_DATA_HTML, initiator);
}
void load_data(const WCHAR* url, UINT dataType, HELEMENT initiator = 0)
{
SCDOM_RESULT r = SciterRequestElementData(he,url, dataType, initiator);
assert(r == SCDOM_OK); (void)r;
}
struct comparator
{
virtual int compare(const sciter::dom::element& e1, const sciter::dom::element& e2) = 0;
static INT SC_CALLBACK scmp( HELEMENT he1, HELEMENT he2, LPVOID param )
{
sciter::dom::element::comparator* self =
static_cast<sciter::dom::element::comparator*>(param);
sciter::dom::element e1 = he1;
sciter::dom::element e2 = he2;
return self->compare( e1,e2 );
}
};
/** reorders children of the element using sorting order defined by cmp
**/
void sort( comparator& cmp, int start = 0, int end = -1 )
{
if (end == -1)
end = children_count();
SCDOM_RESULT r = SciterSortElements(he, start, end, &comparator::scmp, &cmp);
assert(r == SCDOM_OK); (void)r;
}
// "manually" attach event_handler proc to the DOM element
void attach_event_handler(event_handler* p_event_handler )
{
SciterAttachEventHandler(he, &event_handler_raw::element_proc, static_cast<event_handler_raw*>(p_event_handler));
}
void detach_event_handler(event_handler* p_event_handler )
{
SciterDetachEventHandler(he, &event_handler_raw::element_proc, static_cast<event_handler_raw*>(p_event_handler));
}
// call scripting method attached to the element (directly or through scripting behavior)
// Example, script:
// var elem = ...
// elem.foo = function() {...}
// Native code: