ILIAS  release_5-2 Revision v5.2.25-18-g3f80b828510
HTML_Template_ITX Class Reference
+ Inheritance diagram for HTML_Template_ITX:
+ Collaboration diagram for HTML_Template_ITX:

Public Member Functions

 __construct ($root='')
 Builds some complex regexps and calls the constructor of the parent class. More...
 
 init ()
 Clears all datafields of the object and rebuild the internal blocklist. More...
 
 replaceBlock ($block, $template, $keep_content=false)
 Replaces an existing block with new content. More...
 
 replaceBlockfile ($block, $filename, $keep_content=false)
 Replaces an existing block with new content from a file. More...
 
 addBlock ($placeholder, $blockname, $template)
 Adds a block to the template changing a variable placeholder to a block placeholder. More...
 
 addBlockfile ($placeholder, $blockname, $filename)
 Adds a block taken from a file to the template changing a variable placeholder to a block placeholder. More...
 
 placeholderExists ($placeholder, $block='')
 Returns the name of the (first) block that contains the specified placeholder. More...
 
 performCallback ()
 Checks the list of function calls in the template and calls their callback function. More...
 
 getFunctioncalls ()
 Returns a list of all function calls in the current template. More...
 
 setFunctioncontent ($functionID, $replacement)
 Replaces a function call with the given replacement. More...
 
 setCallbackFunction ($tplfunction, $callbackfunction, $callbackobject='', $expandCallbackParameters=false)
 Sets a callback function. More...
 
 setCallbackFuntiontable ($functions)
 Sets the Callback function lookup table. More...
 
 removeBlockData ($block)
 Recursively removes all data assiciated with a block, including all inner blocks. More...
 
 getBlocklist ()
 Returns a list of blocknames in the template. More...
 
 blockExists ($blockname)
 Checks wheter a block exists. More...
 
 getBlockvariables ($block)
 Returns a list of variables of a block. More...
 
 BlockvariableExists ($block, $variable)
 Checks wheter a block variable exists. More...
 
 buildFunctionlist ()
 Builds a functionlist from the template. More...
 
 getValue ($code, $delimiter)
 Truncates the given code from the first occurence of $delimiter but ignores $delimiter enclosed by " or '. More...
 
 deleteFromBlockvariablelist ($block, $variables)
 Deletes one or many variables from the block variable list. More...
 
 updateBlockvariablelist ($block)
 Updates the variable list of a block. More...
 
 findPlaceholderBlocks ($variable)
 Returns an array of blocknames where the given variable placeholder is used. More...
 
 warning ($message, $file='', $line=0)
 Handles warnings, saves them to $warn and prints them or calls die() depending on the flags. More...
 
- Public Member Functions inherited from HTML_Template_IT
 __construct ($root='', $options=null)
 Builds some complex regular expressions and optinally sets the file root directory. More...
 
 setOption ($option, $value)
 Sets the option for the template class. More...
 
 setOptions ($options)
 Sets the options for the template class. More...
 
 show ($block='__global__')
 Print a certain block with all replacements done. More...
 
 get ($block='__global__')
 Returns a block with all replacements done. More...
 
 parse ($block='__global__', $flag_recursion=false)
 Parses the given block. More...
 
 parseCurrentBlock ()
 Parses the current block. More...
 
 setVariable ($variable, $value='')
 Sets a variable value. More...
 
 setCurrentBlock ($block='__global__')
 Sets the name of the current block that is the block where variables are added. More...
 
 touchBlock ($block)
 Preserves an empty block even if removeEmptyBlocks is true. More...
 
 init ()
 Clears all datafields of the object and rebuild the internal blocklist. More...
 
 free ()
 Clears all datafields of the object. More...
 
 setTemplate ( $template, $removeUnknownVariables=true, $removeEmptyBlocks=true)
 Sets the template. More...
 
 loadTemplatefile ( $filename, $removeUnknownVariables=true, $removeEmptyBlocks=true)
 Reads a template file from the disk. More...
 
 setRoot ($root)
 Sets the file root. More...
 
 buildBlockvariablelist ()
 Build a list of all variables within of a block. More...
 
 getGlobalvariables ()
 Returns a list of all global variables. More...
 
 findBlocks ($string)
 Recusively builds a list of all blocks within the template. More...
 
 getFile ($filename)
 Reads a file from disk and returns its content. More...
 
 _addPregDelimiters ($str)
 Adds delimiters to a string, so it can be used as a pattern in preg_* functions. More...
 
 _preserveOpeningDelimiter ($str)
 Replaces an opening delimiter by a special string. More...
 
 errorMessage ($value, $blockname='')
 Return a textual error message for a IT error code. More...
 

Data Fields

 $warn = array()
 
 $printWarning = false
 
 $haltOnWarning = false
 
 $checkblocknameRegExp = ''
 
 $functionPrefix = 'func_'
 
 $functionnameRegExp = '[_a-zA-Z]+[A-Za-z_0-9]*'
 
 $functionRegExp = ''
 
 $functions = array()
 
 $callback = array()
 
- Data Fields inherited from HTML_Template_IT
 $err = array()
 
 $clearCache = false
 
 $openingDelimiter = '{'
 
 $closingDelimiter = '}'
 
 $blocknameRegExp = '[\.0-9A-Za-z_-]+'
 
 $variablenameRegExp = '[\.0-9A-Za-z_-]+'
 
 $variablesRegExp = ''
 
 $removeVariablesRegExp = ''
 RegExp used to strip unused variable placeholder. More...
 
 $removeUnknownVariables = true
 
 $removeEmptyBlocks = true
 
 $blockRegExp = ''
 
 $currentBlock = '__global__'
 
 $template = ''
 
 $blocklist = array()
 
 $blockdata = array()
 
 $blockvariables = array()
 
 $blockinner = array()
 
 $touchedBlocks = array()
 List of blocks to preverse even if they are "empty". More...
 
 $_hiddenBlocks = array()
 List of blocks which should not be shown even if not "empty". More...
 
 $variableCache = array()
 
 $clearCacheOnParse = false
 
 $fileRoot = ''
 
 $flagBlocktrouble = false
 
 $flagGlobalParsed = false
 
 $flagCacheTemplatefile = true
 
 $lastTemplatefile = ''
 EXPERIMENTAL! FIXME! More...
 
 $_options
 $_options['preserve_data'] Whether to substitute variables and remove empty placeholders in data passed through setVariable (see also bugs #20199, #21951). More...
 

Detailed Description

Definition at line 39 of file ITX.php.

Constructor & Destructor Documentation

◆ __construct()

HTML_Template_ITX::__construct (   $root = '')

Builds some complex regexps and calls the constructor of the parent class.

Make sure that you call this constructor if you derive your own template class from this one.

See also
HTML_Template_IT()

Definition at line 116 of file ITX.php.

117 {
118
119 $this->checkblocknameRegExp = '@' . $this->blocknameRegExp . '@';
120 $this->functionRegExp = '@' . $this->functionPrefix . '(' .
121 $this->functionnameRegExp . ')\s*\‍(@sm';
122
123 parent::__construct($root);
124 } // end func constructor

Member Function Documentation

◆ addBlock()

HTML_Template_ITX::addBlock (   $placeholder,
  $blockname,
  $template 
)

Adds a block to the template changing a variable placeholder to a block placeholder.

Add means "replace a variable placeholder by a new block". This is different to PHPLibs templates. The function loads a block, creates a handle for it and assigns it to a certain variable placeholder. To to the same with PHPLibs templates you would call set_file() to create the handle and parse() to assign the parsed block to a variable. By this PHPLibs templates assume that you tend to assign a block to more than one one placeholder. To assign a parsed block to more than only the placeholder you specify in this function you have to use a combination of getBlock() and setVariable().

As no updates to cached data is necessary addBlock() and addBlockfile() are rather "cheap" meaning quick operations.

The block content must not start with and end with this would cause overhead and produce an error.

Parameters
stringName of the variable placeholder, the name must be unique within the template.
stringName of the block to be added
stringContent of the block
Returns
boolean
Exceptions
ilTemplateException
See also
addBlockfile() @access User interface

Definition at line 243 of file ITX.php.

244 {
245 // Don't trust any user even if it's a programmer or yourself...
246 if ($placeholder == '') {
247 throw (new ilTemplateException('No variable placeholder given.'));
248 } elseif ($blockname == '' ||
249 !preg_match($this->checkblocknameRegExp, $blockname)
250 ) {
251 throw (new ilTemplateException("No or invalid blockname '$blockname' given."));
252 } elseif ($template == '') {
253 throw (new ilTemplateException('No block content given.'));
254 } elseif (isset($this->blocklist[$blockname])) {
255 throw (new ilTemplateException('The block '.$blockname.' already exists.'));
256 }
257
258 // find out where to insert the new block
259 $parents = $this->findPlaceholderBlocks($placeholder);
260 if (count($parents) == 0) {
261 throw (new ilTemplateException("The variable placeholder".
262 " '$placeholder' was not found in the template."));
263 return;
264 } elseif (count($parents) > 1) {
265
266 reset($parents);
267 while (list($k, $parent) = each($parents)) {
268 $msg .= "$parent, ";
269 }
270 $msg = substr($parent, -2);
271 throw (new ilTemplateException("The variable placeholder "."'$placeholder'".
272 " must be unique, found in multiple blocks '$msg'."));
273 }
274
275 $template = "<!-- BEGIN $blockname -->" . $template . "<!-- END $blockname -->";
276 $this->findBlocks($template);
277 if ($this->flagBlocktrouble) {
278 return false; // findBlocks() already throws an exception
279 }
280 $this->blockinner[$parents[0]][] = $blockname;
281 $this->blocklist[$parents[0]] = preg_replace(
282 '@' . $this->openingDelimiter . $placeholder .
283 $this->closingDelimiter . '@',
284
285 $this->openingDelimiter . '__' . $blockname . '__' .
286 $this->closingDelimiter,
287
288 $this->blocklist[$parents[0]]
289 );
290
291 $this->deleteFromBlockvariablelist($parents[0], $placeholder);
292 $this->updateBlockvariablelist($blockname);
293
294 return true;
295 } // end func addBlock
updateBlockvariablelist($block)
Updates the variable list of a block.
Definition: ITX.php:723
findPlaceholderBlocks($variable)
Returns an array of blocknames where the given variable placeholder is used.
Definition: ITX.php:760
deleteFromBlockvariablelist($block, $variables)
Deletes one or many variables from the block variable list.
Definition: ITX.php:703
findBlocks($string)
Recusively builds a list of all blocks within the template.
Definition: IT.php:858

References HTML_Template_IT\$template, deleteFromBlockvariablelist(), HTML_Template_IT\findBlocks(), findPlaceholderBlocks(), and updateBlockvariablelist().

Referenced by addBlockfile(), and ilTemplate\addBlockFile().

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◆ addBlockfile()

HTML_Template_ITX::addBlockfile (   $placeholder,
  $blockname,
  $filename 
)

Adds a block taken from a file to the template changing a variable placeholder to a block placeholder.

Parameters
stringName of the variable placeholder to be converted
stringName of the block to be added
stringFile that contains the block @brother addBlock() @access public

Definition at line 307 of file ITX.php.

308 {
309 return $this->addBlock($placeholder, $blockname, $this->getFile($filename));
310 } // end func addBlockfile
addBlock($placeholder, $blockname, $template)
Adds a block to the template changing a variable placeholder to a block placeholder.
Definition: ITX.php:243
getFile($filename)
Reads a file from disk and returns its content.
Definition: IT.php:905

References $filename, addBlock(), and HTML_Template_IT\getFile().

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◆ blockExists()

HTML_Template_ITX::blockExists (   $blockname)

Checks wheter a block exists.

Parameters
string
Returns
boolean @access public
See also
getBlocklist()

Reimplemented in ilTemplate, and ilTemplate.

Definition at line 555 of file ITX.php.

556 {
557 return isset($this->blocklist[$blockname]);
558 } // end func blockExists

◆ BlockvariableExists()

HTML_Template_ITX::BlockvariableExists (   $block,
  $variable 
)

Checks wheter a block variable exists.

Parameters
stringBlockname
stringVariablename
Returns
boolean @access public
See also
getBlockvariables()

Definition at line 591 of file ITX.php.

592 {
593 return isset($this->blockvariables[$block][$variable]);
594 } // end func BlockvariableExists

◆ buildFunctionlist()

HTML_Template_ITX::buildFunctionlist ( )

Builds a functionlist from the template.

@access private

Definition at line 600 of file ITX.php.

601 {
602 $this->functions = array();
603
605 $num = 0;
606
607 while (preg_match($this->functionRegExp, $template, $regs)) {
608
609 $pos = strpos($template, $regs[0]);
610 $template = substr($template, $pos + strlen($regs[0]));
611
612 $head = $this->getValue($template, ')');
613 $args = array();
614
615 $search = $regs[0] . $head . ')';
616
617 $replace = $this->openingDelimiter .
618 '__function' . $num . '__' .
620
621 $this->template = str_replace($search, $replace, $this->template);
622 $template = str_replace($search, $replace, $template);
623
624 while ($head != '' && $args2 = $this->getValue($head, ',')) {
625 $arg2 = trim($args2);
626 $args[] = ('"' == $arg2{0} || "'" == $arg2{0}) ?
627 substr($arg2, 1, -1) : $arg2;
628 if ($arg2 == $head) {
629 break;
630 }
631 $head = substr($head, strlen($arg2) + 1);
632 }
633
634 $this->functions[$num++] = array(
635 'name' => $regs[1],
636 'args' => $args
637 );
638 }
639
640 } // end func buildFunctionlist
getValue($code, $delimiter)
Truncates the given code from the first occurence of $delimiter but ignores $delimiter enclosed by " ...
Definition: ITX.php:652

References HTML_Template_IT\$closingDelimiter, HTML_Template_IT\$template, and getValue().

Referenced by ilTemplate\init(), and init().

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◆ deleteFromBlockvariablelist()

HTML_Template_ITX::deleteFromBlockvariablelist (   $block,
  $variables 
)

Deletes one or many variables from the block variable list.

Parameters
stringBlockname
mixedName of one variable or array of variables ( array ( name => true ) ) to be stripped. @access private

Definition at line 703 of file ITX.php.

704 {
705 if (!is_array($variables)) {
706 $variables = array($variables => true);
707 }
708
709 reset($this->blockvariables[$block]);
710 while (list($varname, $val) = each($this->blockvariables[$block])) {
711 if (isset($variables[$varname])) {
712 unset($this->blockvariables[$block][$varname]);
713 }
714 }
715 } // end deleteFromBlockvariablelist

Referenced by addBlock().

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◆ findPlaceholderBlocks()

HTML_Template_ITX::findPlaceholderBlocks (   $variable)

Returns an array of blocknames where the given variable placeholder is used.

Parameters
stringVariable placeholder
Returns
array $parents parents[0..n] = blockname @access public

Definition at line 760 of file ITX.php.

761 {
762 $parents = array();
763 reset($this->blocklist);
764 while (list($blockname, $content) = each($this->blocklist)) {
765 reset($this->blockvariables[$blockname]);
766 while (
767 list($varname, $val) = each($this->blockvariables[$blockname]))
768 {
769 if ($variable == $varname) {
770 $parents[] = $blockname;
771 }
772 }
773 }
774
775 return $parents;
776 } // end func findPlaceholderBlocks

Referenced by addBlock().

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◆ getBlocklist()

HTML_Template_ITX::getBlocklist ( )

Returns a list of blocknames in the template.

Returns
array [blockname => blockname] @access public
See also
blockExists()

Definition at line 537 of file ITX.php.

538 {
539 $blocklist = array();
540 foreach ($this->blocklist as $block => $content) {
541 $blocklist[$block] = $block;
542 }
543
544 return $blocklist;
545 } // end func getBlocklist

References HTML_Template_IT\$blocklist.

◆ getBlockvariables()

HTML_Template_ITX::getBlockvariables (   $block)

Returns a list of variables of a block.

Parameters
stringBlockname
Returns
array [varname => varname] @access public
See also
BlockvariableExists()

Definition at line 568 of file ITX.php.

569 {
570 if (!isset($this->blockvariables[$block])) {
571 return array();
572 }
573
574 $variables = array();
575 foreach ($this->blockvariables[$block] as $variable => $v) {
576 $variables[$variable] = $variable;
577 }
578
579 return $variables;
580 } // end func getBlockvariables

◆ getFunctioncalls()

HTML_Template_ITX::getFunctioncalls ( )

Returns a list of all function calls in the current template.

Returns
array @access public

Definition at line 411 of file ITX.php.

412 {
413 return $this->functions;
414 } // end func getFunctioncalls

References $functions.

◆ getValue()

HTML_Template_ITX::getValue (   $code,
  $delimiter 
)

Truncates the given code from the first occurence of $delimiter but ignores $delimiter enclosed by " or '.

@access private

Parameters
stringThe code which should be parsed
stringThe delimiter char
Returns
string
See also
buildFunctionList()

Definition at line 652 of file ITX.php.

652 {
653 if ($code == '') {
654 return '';
655 }
656
657 if (!is_array($delimiter)) {
658 $delimiter = array( $delimiter => true );
659 }
660
661 $len = strlen($code);
662 $enclosed = false;
663 $enclosed_by = '';
664
665 if (isset($delimiter[$code[0]])) {
666 $i = 1;
667 } else {
668 for ($i = 0; $i < $len; ++$i) {
669 $char = $code[$i];
670
671 if (
672 ($char == '"' || $char == "'") &&
673 ($char == $enclosed_by || '' == $enclosed_by) &&
674 (0 == $i || ($i > 0 && '\\' != $code[$i - 1]))
675 ) {
676
677 if (!$enclosed) {
678 $enclosed_by = $char;
679 } else {
680 $enclosed_by = "";
681 }
682 $enclosed = !$enclosed;
683
684 }
685
686 if (!$enclosed && isset($delimiter[$char])) {
687 break;
688 }
689 }
690 }
691
692 return substr($code, 0, $i);
693 } // end func getValue
$code
Definition: example_050.php:99

References $code.

Referenced by buildFunctionlist().

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◆ init()

HTML_Template_ITX::init ( )

Clears all datafields of the object and rebuild the internal blocklist.

LoadTemplatefile() and setTemplate() automatically call this function when a new template is given. Don't use this function unless you know what you're doing.

@access public

See also
free()

Reimplemented from HTML_Template_IT.

Reimplemented in ilTemplate.

Definition at line 126 of file ITX.php.

127 {
128 $this->free();
129 $this->buildFunctionlist();
130 $this->findBlocks($this->template);
131 // we don't need it any more
132 $this->template = '';
133 $this->buildBlockvariablelist();
134
135 } // end func init
buildFunctionlist()
Builds a functionlist from the template.
Definition: ITX.php:600
free()
Clears all datafields of the object.
Definition: IT.php:714
buildBlockvariablelist()
Build a list of all variables within of a block.
Definition: IT.php:817

References HTML_Template_IT\buildBlockvariablelist(), buildFunctionlist(), HTML_Template_IT\findBlocks(), and HTML_Template_IT\free().

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◆ performCallback()

HTML_Template_ITX::performCallback ( )

Checks the list of function calls in the template and calls their callback function.

@access public

Definition at line 372 of file ITX.php.

373 {
374 reset($this->functions);
375 while (list($func_id, $function) = each($this->functions)) {
376 if (isset($this->callback[$function['name']])) {
377 if ($this->callback[$function['name']]['expandParameters']) {
378 $callFunction = 'call_user_func_array';
379 } else {
380 $callFunction = 'call_user_func';
381 }
382
383 if ($this->callback[$function['name']]['object'] != '') {
384 $call =
385 $callFunction(
386 array(
387 &$GLOBALS[$this->callback[$function['name']]['object']],
388 $this->callback[$function['name']]['function']),
389 $function['args']
390 );
391
392 } else {
393 $call =
394 $callFunction(
395 $this->callback[$function['name']]['function'],
396 $function['args']
397 );
398 }
399 $this->variableCache['__function' . $func_id . '__'] = $call;
400 }
401 }
402
403 } // end func performCallback
$GLOBALS['loaded']
Global hash that tracks already loaded includes.

References $GLOBALS.

◆ placeholderExists()

HTML_Template_ITX::placeholderExists (   $placeholder,
  $block = '' 
)

Returns the name of the (first) block that contains the specified placeholder.

Parameters
stringName of the placeholder you're searching
stringName of the block to scan. If left out (default) all blocks are scanned.
Returns
string Name of the (first) block that contains the specified placeholder. If the placeholder was not found or an error occured an empty string is returned.
Exceptions
ilTemplateException@access public

Definition at line 326 of file ITX.php.

327 {
328 if ($placeholder == '') {
329 throw (new ilTemplateException('No placeholder name given.'));
330 }
331
332 if ($block != '' && !isset($this->blocklist[$block])) {
333 throw (new ilTemplateException("Unknown block '$block'."));
334 }
335
336 // name of the block where the given placeholder was found
337 $found = '';
338
339 if ($block != '') {
340 if (is_array($variables = $this->blockvariables[$block])) {
341 // search the value in the list of blockvariables
342 reset($variables);
343 while (list($k, $variable) = each($variables)) {
344 if ($k == $placeholder) {
345 $found = $block;
346 break;
347 }
348 }
349 }
350 } else {
351
352 // search all blocks and return the name of the first block that
353 // contains the placeholder
354 reset($this->blockvariables);
355 while (list($blockname, $variables) = each($this->blockvariables)){
356 if (is_array($variables) && isset($variables[$placeholder])) {
357 $found = $blockname;
358 break;
359 }
360 }
361 }
362
363 return $found;
364 } // end func placeholderExists

◆ removeBlockData()

HTML_Template_ITX::removeBlockData (   $block)

Recursively removes all data assiciated with a block, including all inner blocks.

Parameters
stringblock to be removed @access private

Definition at line 513 of file ITX.php.

514 {
515 if (isset($this->blockinner[$block])) {
516 foreach ($this->blockinner[$block] as $k => $inner) {
517 $this->removeBlockData($inner);
518 }
519
520 unset($this->blockinner[$block]);
521 }
522
523 unset($this->blocklist[$block]);
524 unset($this->blockdata[$block]);
525 unset($this->blockvariables[$block]);
526 unset($this->touchedBlocks[$block]);
527
528 } // end func removeBlockinner
removeBlockData($block)
Recursively removes all data assiciated with a block, including all inner blocks.
Definition: ITX.php:513

References removeBlockData().

Referenced by removeBlockData(), and replaceBlock().

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◆ replaceBlock()

HTML_Template_ITX::replaceBlock (   $block,
  $template,
  $keep_content = false 
)

Replaces an existing block with new content.

This function will replace a block of the template and all blocks contained in the replaced block and add a new block insted, means you can dynamically change your template.

Note that changing the template structure violates one of the IT[X] development goals. I've tried to write a simple to use template engine supporting blocks. In contrast to other systems IT[X] analyses the way you've nested blocks and knows which block belongs into another block. The nesting information helps to make the API short and simple. Replacing blocks does not only mean that IT[X] has to update the nesting information (relatively time consumpting task) but you have to make sure that you do not get confused due to the template change itself.

Parameters
stringBlockname
stringBlockcontent
booleantrue if the new block inherits the content of the old block
Returns
boolean
Exceptions
ilTemplateException
See also
replaceBlockfile(), addBlock(), addBlockfile() @access User interface

Definition at line 162 of file ITX.php.

163 {
164 if (!isset($this->blocklist[$block])) {
165 throw (new ilTemplateException("The block "."'$block'".
166 " does not exist in the template and thus it can't be replaced."));
167 }
168
169 if ($template == '') {
170 throw (new ilTemplateException('No block content given.'));
171 }
172
173 if ($keep_content) {
174 $blockdata = $this->blockdata[$block];
175 }
176
177 // remove all kinds of links to the block / data of the block
178 $this->removeBlockData($block);
179
180 $template = "<!-- BEGIN $block -->" . $template . "<!-- END $block -->";
181 $parents = $this->blockparents[$block];
182 $this->findBlocks($template);
183 $this->blockparents[$block] = $parents;
184
185 // KLUDGE: rebuild the list for all block - could be done faster
186 $this->buildBlockvariablelist();
187
188 if ($keep_content) {
189 $this->blockdata[$block] = $blockdata;
190 }
191
192 // old TODO - I'm not sure if we need this
193 // update caches
194
195 return true;
196 } // end func replaceBlock

References HTML_Template_IT\$blockdata, HTML_Template_IT\$template, HTML_Template_IT\buildBlockvariablelist(), HTML_Template_IT\findBlocks(), and removeBlockData().

Referenced by replaceBlockfile().

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◆ replaceBlockfile()

HTML_Template_ITX::replaceBlockfile (   $block,
  $filename,
  $keep_content = false 
)

Replaces an existing block with new content from a file.

@brother replaceBlock()

Parameters
stringBlockname
stringName of the file that contains the blockcontent
booleantrue if the new block inherits the content of the old block @access public

Definition at line 207 of file ITX.php.

208 {
209 return $this->replaceBlock($block, $this->getFile($filename), $keep_content);
210 } // end func replaceBlockfile
replaceBlock($block, $template, $keep_content=false)
Replaces an existing block with new content.
Definition: ITX.php:162

References $filename, HTML_Template_IT\getFile(), and replaceBlock().

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◆ setCallbackFunction()

HTML_Template_ITX::setCallbackFunction (   $tplfunction,
  $callbackfunction,
  $callbackobject = '',
  $expandCallbackParameters = false 
)

Sets a callback function.

IT[X] templates (note the X) can contain simple function calls. "function call" means that the editor of the template can add special placeholder to the template like 'func_h1("embedded in h1")'. IT[X] will grab this function calls and allow you to define a callback function for them.

This is an absolutely evil feature. If your application makes heavy use of such callbacks and you're even implementing if-then etc. on the level of a template engine you're reiventing the wheel... - that's actually how PHP came into life. Anyway, sometimes it's handy.

Consider also using XML/XSLT or native PHP. And please do not push IT[X] any further into this direction of adding logics to the template engine.

For those of you ready for the X in IT[X]:

<?php ... function h_one($args) { return sprintf('

s

', $args[0]); }

... $itx = new HTML_Template_ITX( ... ); ... $itx->setCallbackFunction('h1', 'h_one'); $itx->performCallback(); ?>

template: func_h1('H1 Headline');

Parameters
stringFunction name in the template
stringName of the callback function
stringName of the callback object
booleanIf the callback is called with a list of parameters or with an array holding the parameters
Returns
boolean False on failure.
Exceptions
ilTemplateException@access public
Deprecated:
The $callbackobject parameter is depricated since version 1.2 and might be dropped in further versions.

Definition at line 476 of file ITX.php.

477 {
478 if ($tplfunction == '' || $callbackfunction == '') {
479 throw (new ilTemplateException("No template function "."('$tplfunction')".
480 " and/or no callback function ('$callbackfunction') given."));
481 }
482 $this->callback[$tplfunction] = array(
483 'function' => $callbackfunction,
484 'object' => $callbackobject,
485 'expandParameters' => (boolean) $expandCallbackParameters
486 );
487
488 return true;
489 } // end func setCallbackFunction

◆ setCallbackFuntiontable()

HTML_Template_ITX::setCallbackFuntiontable (   $functions)

Sets the Callback function lookup table.

Parameters
arrayfunction table array[templatefunction] = array( "function" => userfunction, "object" => userobject ) @access public

Definition at line 502 of file ITX.php.

503 {
504 $this->callback = $functions;
505 } // end func setCallbackFunctiontable

References $functions.

◆ setFunctioncontent()

HTML_Template_ITX::setFunctioncontent (   $functionID,
  $replacement 
)

Replaces a function call with the given replacement.

Parameters
intFunction ID
stringReplacement
Deprecated:

Definition at line 423 of file ITX.php.

424 {
425 $this->variableCache['__function' . $functionID . '__'] = $replacement;
426 } // end func setFunctioncontent

◆ updateBlockvariablelist()

HTML_Template_ITX::updateBlockvariablelist (   $block)

Updates the variable list of a block.

Parameters
stringBlockname @access private

Definition at line 723 of file ITX.php.

724 {
725 preg_match_all( $this->variablesRegExp,
726 $this->blocklist[$block], $regs
727 );
728
729 if (count($regs[1]) != 0) {
730 foreach ($regs[1] as $k => $var) {
731 $this->blockvariables[$block][$var] = true;
732 }
733 } else {
734 $this->blockvariables[$block] = array();
735 }
736
737 // check if any inner blocks were found
738 if (isset($this->blockinner[$block]) &&
739 is_array($this->blockinner[$block]) &&
740 count($this->blockinner[$block]) > 0
741 ) {
742 /*
743 * loop through inner blocks, registering the variable
744 * placeholders in each
745 */
746 foreach ($this->blockinner[$block] as $childBlock) {
747 $this->updateBlockvariablelist($childBlock);
748 }
749 }
750 } // end func updateBlockvariablelist

References updateBlockvariablelist().

Referenced by addBlock(), and updateBlockvariablelist().

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◆ warning()

HTML_Template_ITX::warning (   $message,
  $file = '',
  $line = 0 
)

Handles warnings, saves them to $warn and prints them or calls die() depending on the flags.

Parameters
stringWarning
stringFile where the warning occured
intLinenumber where the warning occured
See also
$warn, $printWarning, $haltOnWarning @access private

Definition at line 788 of file ITX.php.

789 {
790 $message = sprintf(
791 'HTML_Template_ITX Warning: %s [File: %s, Line: %d]',
792 $message,
793 $file,
794 $line
795 );
796
797 $this->warn[] = $message;
798
799 if ($this->printWarning) {
800 print $message;
801 }
802
803 if ($this->haltOnWarning) {
804 die($message);
805 }
806 } // end func warning
sprintf('%.4f', $callTime)
if(! $in) print
if(!file_exists("$old.txt")) if( $old===$new) if(file_exists("$new.txt")) $file

References $file, print, and sprintf.

Field Documentation

◆ $callback

HTML_Template_ITX::$callback = array()

Definition at line 105 of file ITX.php.

◆ $checkblocknameRegExp

HTML_Template_ITX::$checkblocknameRegExp = ''

Definition at line 69 of file ITX.php.

◆ $functionnameRegExp

HTML_Template_ITX::$functionnameRegExp = '[_a-zA-Z]+[A-Za-z_0-9]*'

Definition at line 81 of file ITX.php.

◆ $functionPrefix

HTML_Template_ITX::$functionPrefix = 'func_'

Definition at line 75 of file ITX.php.

◆ $functionRegExp

HTML_Template_ITX::$functionRegExp = ''

Definition at line 91 of file ITX.php.

◆ $functions

HTML_Template_ITX::$functions = array()

Definition at line 98 of file ITX.php.

Referenced by getFunctioncalls(), and setCallbackFuntiontable().

◆ $haltOnWarning

HTML_Template_ITX::$haltOnWarning = false

Definition at line 63 of file ITX.php.

◆ $printWarning

HTML_Template_ITX::$printWarning = false

Definition at line 55 of file ITX.php.

◆ $warn

HTML_Template_ITX::$warn = array()

Definition at line 47 of file ITX.php.


The documentation for this class was generated from the following file: