/** Get value of the DOM element. Returns value for elements recognized by get_ctl_type() function.
* \param[in] el \b const dom::element&, The element.
* \return \b value_t, value of the element.
**/
inline value_t get_value(dom::element& el )
{
switch(get_ctl_type(el))
{
case CTL_EDIT:
case CTL_DECIMAL:
case CTL_CURRENCY:
case CTL_PASSWORD:
case CTL_NUMERIC:
case CTL_PROGRESS:
case CTL_SLIDER:
case CTL_SELECT_SINGLE:
case CTL_SELECT_MULTIPLE:
case CTL_DD_SELECT:
case CTL_TEXTAREA:
case CTL_DATE:
case CTL_CALENDAR:
default:
return el.get_value();
// special cases:
case CTL_UNKNOWN:
if( !aux::wcseq(el.get_attribute("type"),L"hidden"))
break;
//else fall below if it is hidden
case CTL_BUTTON: return value_t(el.get_attribute("value"));
case CTL_CHECKBOX: return get_checkbox_bits(el);
case CTL_RADIO: return get_radio_index(el);
case CTL_HTMLAREA: return value_t(el.get_html(false/*inner*/));
}
return value_t();
}
void setup_node( dom::element node )
{
dom::element on = node.find_first("option[check='on'],options[check='on']");
dom::element off = node.find_first("option[check='off'],options[check='off']");
dom::element mixed = node.find_first("options[check='mixed']");
const wchar_t* _prev = node.get_attribute(CHECK_ATTR);
std::wstring prev = _prev?_prev:L"";
if( mixed.is_valid() || (on.is_valid() && off.is_valid()))
{
node.set_attribute(CHECK_ATTR,L"mixed");
if(prev != L"mixed") node.update();
}
else if( on.is_valid() )
{
node.set_attribute(CHECK_ATTR,L"on");
if(prev != L"on") node.update();
}
else
{
node.set_attribute(CHECK_ATTR,L"off");
if(prev != L"off") node.update();
}
}
NODE_STATE init_options(dom::element n)
{
//NODE_STATE n_state = NODE_MIXED;
int n_off = 0;
int n_on = 0;
int n_total = 0;
for(int i = 0; i < int(n.children_count()); ++i)
{
dom::element t = n.child(i);
NODE_STATE t_state;
if( streq(t.get_element_type(),"options") )
t_state = init_options(t);
else if( streq(t.get_element_type(),"option") )
t_state = get_state(t);
else
continue;
set_state(t, t_state);
switch( t_state )
{
case NODE_OFF: ++n_off; break;
case NODE_ON: ++n_on; break;
}
++n_total;
}
if( n_off == n_total ) return NODE_OFF;
if( n_on == n_total ) return NODE_ON;
return NODE_MIXED;
}
void checkall (dom::element& table, bool onOff )
{
if( !is_multiple(table) ) return;
struct unchecker_cb: dom::callback
{
bool on_element(HELEMENT he)
{
htmlayout::dom::element el = he; if( el.get_state(STATE_CHECKED)) el.set_state(0,STATE_CHECKED,false ); return false; /*continue enumeration*/
}
};
struct checker_cb: dom::callback
{
bool on_element(HELEMENT he)
{
htmlayout::dom::element el = he; if( !el.get_state(STATE_CHECKED)) el.set_state(STATE_CHECKED,0,false ); return false; /*continue enumeration*/
}
};
if(onOff)
{
checker_cb checker;
table.find_all(&checker,"tr");
}
else
{
unchecker_cb unchecker;
table.find_all(&unchecker,"tr:checked");
}
}
void set_anchor (dom::element& table,const int idx)
{
dom::element row = table.find_first("tr:anchor");
if( row.is_valid() ) row.set_state( 0,STATE_ANCHOR,false);
row = table.child(idx);
if( row.is_valid() )
row.set_state( STATE_ANCHOR | STATE_CHECKED,0,false);
}
bool belongs_to( dom::element parent, dom::element child )
{
if( !child.is_valid())
return false;
if( parent == child )
return true;
return belongs_to( parent, child.parent() );
}
void sort_rows( dom::element& table, int column_no )
{
row_sorter rs( column_no );
int fr = fixed_rows( table );
table.sort(rs,fr);
table.update(true);
}
NODE_STATE get_state(dom::element item)
{
if(wcseq(item.get_attribute("check"),L"on"))
return NODE_ON;
else if(wcseq(item.get_attribute("check"),L"mixed"))
return NODE_MIXED;
else
return NODE_OFF;
}
void set_state(dom::element item, NODE_STATE st)
{
switch( st )
{
case NODE_ON: item.set_attribute("check",L"on"); break;
case NODE_MIXED: item.set_attribute("check",L"mixed"); break;
case NODE_OFF: item.set_attribute("check",L"off"); break;
}
}
// selects all options in multiselect.
inline void select_all_options(dom::element& select_el )
{
selected_cb all_options;
select_el.find_all(&all_options, "option"); // select all currently selected <option>s
for( int n = int(all_options.elements.size()) - 1; n >= 0 ; --n )
all_options.elements[n].set_state(STATE_CHECKED,0, false); // set state
select_el.update();
}
// returns bit mask - checkboxes set
inline value_t get_checkbox_bits(dom::element& el )
{
selected_cb selected;
dom::element r = el.parent(); // ATTN: I assume here that all checkboxes in the group belong to the same parent!
r.find_all(&selected, "[type='checkbox'][name='%S']", el.get_attribute("name"));
int m = 1, v = 0;
for( unsigned int n = 0; n < selected.elements.size(); ++n, m <<= 1 )
if ( selected.elements[n].get_state(STATE_CHECKED) ) v |= m;
return selected.elements.size()==1?value_t(v==1):value_t(v); // for alone checkbox we return true/false
}
inline value_t get_radio_index( dom::element& el )
{
selected_cb selected;
dom::element r = el.parent(); // ATTN: I assume here that all radios in the group belong to the same parent!
r.find_all(&selected, "[type='radio'][name='%S']", el.get_attribute("name"));
for( unsigned int n = 0; n < selected.elements.size(); ++n )
if ( selected.elements[n].get_state(STATE_CHECKED) )
return value_t(int(n));
return value_t();
}
// clear checked states in multiselect <select>.
// this simply resets :checked state for all checked <option>'s
inline void clear_all_options(dom::element& select_el )
{
selected_cb selected;
select_el.find_all(&selected, "option:checked,[role='option']:checked"); // select all currently selected <option>s
for( int n = int(selected.elements.size()) - 1; n >= 0 ; --n )
selected.elements[n].set_state(0, STATE_CHECKED, false); // reset state
select_el.update();
}
bool is_fullpath(dom::element &el)
{
BOOL bFullPath = (el.get_attribute("fullpath") != NULL);
if ( !bFullPath )
{
dom::element ep = el.parent();
bFullPath = (ep.is_valid())?(ep.get_attribute("fullpath") != NULL):FALSE;
}
return bFullPath;
}
/** returns current row (if any) **/
dom::element get_current_row( dom::element& table )
{
for( int i = table.children_count() - 1; i >= 0 ; --i)
{
dom::element t = table.child((unsigned int)i);
if( t.get_state(STATE_CURRENT))
return t;
}
return dom::element(); // empty
}
void set_checked_row( dom::element& table, dom::element& row, bool toggle = false )
{
if(toggle)
{
if( row.get_state( STATE_CHECKED) )
row.set_state( 0,STATE_CHECKED,false);
else
row.set_state( STATE_CHECKED,0,false);
}
else
row.set_state( STATE_CHECKED,0,false);
}
/** set current row **/
void set_current_row( dom::element& table, dom::element& row, UINT keyboardStates, bool dblClick = false )
{
// get previously selected row:
dom::element prev = get_current_row( table );
if( prev.is_valid() )
{
if( prev != row )
prev.set_state(0,STATE_CURRENT, false); // drop state flags
}
row.set_state(STATE_CURRENT); // set state flags
row.scroll_to_view();
table.post_event( dblClick? TABLE_ROW_DBL_CLICK:TABLE_ROW_CLICK, row.index(), row);
}
inline void set_radio_index( dom::element& el, const value_t& t )
{
selected_cb selected;
dom::element r = el.parent(); // ATTN: I assume here that all radios in the group belong to the same parent!
r.find_all(&selected, "[type='radio'][name='%S']", el.get_attribute("name"));
unsigned int idx = (unsigned int)t.get(0);
for( unsigned int n = 0; n < selected.elements.size(); ++n )
{
dom::element& e = selected.elements[n];
if ( n == idx)
e.set_state(STATE_CHECKED, 0);
else
e.set_state(0, STATE_CHECKED);
}
}
// sets checkboxes by bit mask
inline void set_checkbox_bits(dom::element& el, const value_t& t )
{
selected_cb selected;
dom::element r = el.parent(); // ATTN: I assume here that all checkboxes in the group belong to the same parent!
r.find_all(&selected, "[type='checkbox'][name='%S']", el.get_attribute("name"));
int m = 1, v = selected.elements.size()==1?(t.get(false)?1:0):t.get(0);
for( unsigned int n = 0; n < selected.elements.size(); ++n, m <<= 1 )
{
dom::element& e = selected.elements[n];
if( (v & m) != 0)
e.set_state( STATE_CHECKED, 0 ) ;
else
e.set_state( 0, STATE_CHECKED ) ;
}
}
void notify(dom::element& el, NMHL_HYPERLINK::type code)
{
// send notification
NMHL_HYPERLINK nm;
memset(&nm,0,sizeof(nm));
HWND hwnd = el.get_element_hwnd(true);
nm.hdr.code = HLN_HYPERLINK;
nm.hdr.hwndFrom = hwnd;
nm.hdr.idFrom = GetDlgCtrlID(hwnd);
nm.action = code;
nm.he = el;
dom::element root = el.root();
const wchar_t *pHREF = el.get_attribute("href");
if(pHREF)
{
if(code == NMHL_HYPERLINK::CLICK && pHREF[0] == '#') // anchor name, this is a local hyperlink
{
if( pHREF+1 == 0 ) // href='#' case
return;
dom::element anchor_el = root.find_first("[id='%S'],[name='%S']",pHREF+1,pHREF+1);
//find_element_by_name(el.root_element(hwnd), pHREF + 1);
if(anchor_el.is_valid()) // found
{
anchor_el.scroll_to_view(true /* scroll it to top of the view */);
return; // shall host be notified about this?
}
}
wcsncpy(nm.szHREF,pHREF,MAX_URL_LENGTH);
el.combine_url(nm.szHREF,MAX_URL_LENGTH);
}
const wchar_t *pszTarget = el.get_attribute("target");
if(pszTarget)
{
if(code == NMHL_HYPERLINK::CLICK && try_to_load( root, nm.szHREF, pszTarget ))
return;
wcsncpy(nm.szTarget,pszTarget,MAX_URL_LENGTH);
}
::SendMessage(hwnd,WM_BEHAVIOR_NOTIFY,HLN_HYPERLINK,LPARAM(&nm));
}
static BOOL process_key( dom::element& container, const char* keyname )
{
// find all callback
struct:public htmlayout::dom::callback
{
htmlayout::dom::element hot_key_element;
virtual bool on_element(HELEMENT he)
{
htmlayout::dom::element t = he;
if( t.enabled() && t.visible())
{
hot_key_element = t;
return true; // found, stop;
}
return false;
}
} cb;
//Original version was:
// container.find_all(&cb, "[accesskey=='%s']", keyname);
//By request of Christopher Brown, the Great, from Symantec this became as:
container.find_all(&cb, "[accesskey=='%s'],[accesskey-alt=='%s']", keyname, keyname);
if( cb.hot_key_element.is_valid())
{
METHOD_PARAMS prm; prm.methodID = DO_CLICK;
if(cb.hot_key_element.call_behavior_method(&prm))
return true;
}
return false;
}
/** Get values of all "controls" contained inside the DOM element.
* Function will gather values of elements having name attribute defined
* and recognized by get_ctl_type() function.
* \param[in] el \b dom::element&, The element.
* \param[out] all \b named_values&, Collection.
* \return \b bool, \c true if there are any value was harvested.
**/
inline bool get_values(const dom::element& el, named_values& all )
{
selected_cb selected;
el.find_all(&selected, "[name]" ); // select all elements having name attribute
for( unsigned int n = 0; n < selected.elements.size(); ++n )
{
const dom::element& t = selected.elements[n];
//if( !t.get_style_attribute("behavior") )
// continue; - commented out to support input type="hidden" that does not have behavior assigned
const wchar_t* pn = t.get_attribute("name");
if( !pn )
{
assert(false); // how come?
continue;
}
std::wstring name = pn;
if( all.find(name) != all.end())
continue; // element with this name is already there,
// checkboxes and radios are groups in fact,
// we are returning here only cumulative group value
int ctl_type = get_ctl_type(t);
if( ctl_type == CTL_NO/*|| ctl_type == CTL_BUTTON*/)
continue;
all[name] = get_value(selected.elements[n]);
}
return all.size() != 0;
}
// set current item
virtual void set_current_item( const dom::element& ctl, dom::element& item )
{
// get previously selected item:
dom::element prev_current = ctl.find_first(":current");
dom::element prev = ctl.find_first(":expanded");
if(prev_current != item && prev_current.is_valid())
prev_current.set_state(0, STATE_CURRENT);
if( prev.is_valid() )
{
if( prev == item ) return; // already here, nothing to do.
prev.set_state(0,STATE_CURRENT | STATE_EXPANDED); // drop state flags
}
item.set_state(STATE_CURRENT | STATE_EXPANDED); // set state flags
}
inline void set_radio_index( dom::element& el, const json::value& t )
{
selected_cb selected;
dom::element r = el.parent(); // ATTN: I assume here that all radios in the group belong to the same parent!
r.find_all(&selected, "[type='radio'][name='%S']", el.get_attribute("name"));
unsigned int idx = (unsigned int)t.get(0);
for( unsigned int n = 0; n < selected.elements.size(); ++n )
{
dom::element& e = selected.elements[n];
if ( n == idx)
{
e.set_value(json::value(true));
break;
}
}
}
dom::element target_item(const dom::element& ctl, dom::element target)
{
if( target == ctl )
return dom::element();
if( !target.is_valid() )
return target;
dom::element target_parent = target.parent();
if( !target_parent.is_valid() )
return target;
if( target.test("li > .caption") )
return target_parent; // only if click on "caption" element of <li>. Returns that <li> element.
return target_item( ctl, target.parent() );
}
// select next/prev/first/last tab
bool select_tab( dom::element& tabs_el, dom::element& tab_el, int direction )
{
// find new tab
dom::element new_tab_el(0);
switch( direction )
{
case -2: new_tab_el = tabs_el.first_sibling();
while( new_tab_el.is_valid() )
{
if( !new_tab_el.get_state(STATE_DISABLED) )
break;
new_tab_el = new_tab_el.next_sibling();
}
break;
case -1: new_tab_el = tab_el.prev_sibling();
while( new_tab_el.is_valid() )
{
if( !new_tab_el.get_state(STATE_DISABLED) )
break;
new_tab_el = new_tab_el.prev_sibling();
}
break;
case +1: new_tab_el = tab_el.next_sibling();
while( new_tab_el.is_valid() )
{
if( !new_tab_el.get_state(STATE_DISABLED) )
break;
new_tab_el = new_tab_el.next_sibling();
}
break;
case +2: new_tab_el = tab_el.last_sibling();
while( new_tab_el.is_valid() )
{
if( !new_tab_el.get_state(STATE_DISABLED) )
break;
new_tab_el = new_tab_el.prev_sibling();
}
break;
default: assert(false); return false;
}
if( !new_tab_el.is_valid() || new_tab_el.get_attribute("panel") == 0 ) //is not a tab element
return FALSE;
return select_tab( tabs_el, new_tab_el );
}
// select
bool select_tab( dom::element& tabs_el, dom::element& tab_el )
{
if(tab_el.get_state(STATE_CURRENT))
// already selected, nothing to do...
return true; // but we've handled it.
//find currently selected element (tab and panel) and remove "selected" from them
dom::element prev_panel_el = tabs_el.find_first(":root>[name]:expanded");
dom::element prev_tab_el = tabs_el.find_first(":root>.strip>[panel]:current");
// find new tab and panel
const wchar_t* pname = tab_el.get_attribute("panel");
dom::element panel_el = tabs_el.find_first(":root>[name=\"%S\"]", pname);
if( !panel_el.is_valid() || !tab_el.is_valid() )
{
assert(false); // panel="somename" without matching name="somename"
return true;
}
if( prev_panel_el.is_valid() )
{
prev_panel_el.set_attribute("selected", 0); // remove selected attribute - just in case somone is using attribute selectors
prev_panel_el.set_state(STATE_COLLAPSED,0); // set collapsed in case of someone use it for styling
}
if( prev_tab_el.is_valid() )
{
prev_tab_el.set_attribute("selected", 0); // remove selected attribute
prev_tab_el.set_state(0,STATE_CURRENT); // reset also state flag, :current
}
panel_el.set_attribute("selected", L""); // set selected attribute (empty)
panel_el.set_state(STATE_EXPANDED,0); // expand it
tab_el.set_attribute("selected", L""); // set selected attribute (empty)
tab_el.set_state(STATE_CURRENT,0); // set also state flag, :current
// notify all parties involved
if (prev_tab_el.is_valid())
{
prev_tab_el.post_event(ELEMENT_COLLAPSED,0, prev_tab_el); // source here is old collapsed tab itself
}
tab_el.post_event(ELEMENT_EXPANDED,0, tab_el); // source here is new expanded tab itself
// NOTE #1: these event will bubble from panel elements up to the root so panel itself, tabs ctl, its parent, etc.
// will receive these notifications. Handle them if you need to change UI dependent from current tab.
// NOTE #2: while handling this event in:
// virtual BOOL on_event (HELEMENT he, HELEMENT target, BEHAVIOR_EVENTS type, UINT reason ),
// HELEMENT target is the panel element being collapsed/expanded
return true;
}
/** set current row **/
void set_current_row( dom::element& table, dom::element& row, UINT keyboardStates, bool dblClick = false )
{
if(is_multiple(table))
{
if (keyboardStates & SHIFT_KEY_PRESSED)
{
checkall(table, false);
check_range(table,row.index(),TRUE); // from current to new
}
else
{
if (keyboardStates & CONTROL_KEY_PRESSED)
set_checked_row (table,row, true); // toggle
else
checkall(table, false);
set_anchor(table,row.index ());
}
}
// get previously selected row:
dom::element prev = get_current_row( table );
if( prev.is_valid() )
{
if( prev != row )
prev.set_state(0,STATE_CURRENT, false); // drop state flags
}
row.set_state(STATE_CURRENT); // set state flags
row.scroll_to_view();
::UpdateWindow(row.get_element_hwnd(false));
table.post_event( dblClick? TABLE_ROW_DBL_CLICK:TABLE_ROW_CLICK, row.index(), row);
}
virtual void on_column_click( dom::element& table, dom::element& header_cell )
{
super::on_column_click( table, header_cell );
dom::element current = table.find_first("th:checked");
if( current == header_cell )
return; // already here, nothing to do.
if( current.is_valid() )
current.set_state(0, STATE_CHECKED);
header_cell.set_state(STATE_CHECKED);
dom::element ctr = get_current_row( table );
sort_rows( table, header_cell.index() );
if( ctr.is_valid() )
ctr.scroll_to_view();
}
bool do_horizontal(UINT event_type, POINT pt,
dom::element &splitter_el, dom::element &first, dom::element &second,
dom::element &parent_el)
{
// which element width we will change?
RECT rc_parent = parent_el.get_location();
RECT rc = first.get_location();
// if width of first element is less than half of parent we
// will change its width.
bool change_first =
(rc.right - rc.left) < (rc_parent.right - rc_parent.left)/2;
if(!change_first)
rc = second.get_location();
if(event_type == MOUSE_DOWN)
{
pressed_offset = pt.x;
splitter_el.set_capture();
return false; // don't need updates
}
// mouse move handling
if(pt.x == pressed_offset)
return false; // don't need updates
int width = rc.right - rc.left;
wchar_t buf[32];
if(change_first)
{
width += (pt.x - pressed_offset);
if(width >= 0)
{
swprintf(buf,L"%dpx", width);
first.set_style_attribute("width",buf);
second.set_style_attribute("width",L"100%%");
}
}
else
{
width -= (pt.x - pressed_offset);
if(width >= 0)
{
swprintf(buf,L"%dpx", width);
first.set_style_attribute("width",L"100%%");
second.set_style_attribute("width",buf);
}
}
return true; // need update
}
