Added tutorial page for TExpression and TStatements.

3 files changed, 59 insertions, 4 deletions

diff --git a/demos/quickstart/protected/pages/Controls/Expression.page b/demos/quickstart/protected/pages/Controls/Expression.page
index 767f292f..efa1ab7a 100644
--- a/demos/quickstart/protected/pages/Controls/Expression.page
+++ b/demos/quickstart/protected/pages/Controls/Expression.page
@@ -4,7 +4,27 @@
 <com:DocLink ClassPath="System.Web.UI.WebControls.TExpression" />

 

 <p>

-TBD

+<tt>TExpression</tt> evaluates a PHP expression and displays the evaluation result. To specify the expression to be evaluated, set the <tt>Expression</tt> property. In a control template, <a href="?page=Configurations.Templates2#et">expression tags</a> are often used instead of the complete <a href="?page=Configurations.Templates1#ct">component tags</a> when the main purpose is to display the evaluation result of some PHP expression. For example, the following two tags are equivalent,

+</p>

+<com:TTextHighlighter Language="prado" CssClass="source">

+&lt;com:TExpression Expression="date()" /&gt;

+&lt;%= date() %&gt;

+</com:TTextHighlighter>

+

+<p>

+<tt>TExpression</tt> evaluates the expression during the rendering control lifecycle.

+</p>

+

+<p>

+The context of the expression in a <tt>TExpression</tt> control is the control itself. That is, <tt>$this</tt> represents the control object if it is present in the expression. For example, both of the following template tags will display the title of the page containing the <tt>TExpression</tt> control.

+</p>

+<com:TTextHighlighter Language="prado" CssClass="source">

+&lt;com:TExpression Expression="$this->Page->Title" /&gt;

+&lt;%= $this->Page->Title %&gt;

+</com:TTextHighlighter>

+

+<p>

+Be aware, since <tt>TExpression</tt> allows execution of arbitrary PHP code, in general you should not use it to evaluate expressions submitted by your application users.

 </p>

 

 </com:TContent>
\ No newline at end of file
diff --git a/demos/quickstart/protected/pages/Controls/Standard.page b/demos/quickstart/protected/pages/Controls/Standard.page
index ab485233..11c8eaec 100644
--- a/demos/quickstart/protected/pages/Controls/Standard.page
+++ b/demos/quickstart/protected/pages/Controls/Standard.page
@@ -19,7 +19,7 @@
   <a href="?page=Controls.DatePicker">TDatePicker</a> represents an input field taking date values via a calendar dialog.

   </li>

 

-  <li>*

+  <li>

   <a href="?page=Controls.Expression">TExpression</a> accepts a PHP expression and displays the evaluation result on a Web page.

   </li>

 

@@ -95,7 +95,7 @@
   <a href="?page=Controls.SafeHtml">TSafeHtml</a> displays its body content with assurance that the content contain no harmful code (such as <a href="?page=Security.XSS">XSS</a>).

   </li>

 

-  <li>*

+  <li>

   <a href="?page=Controls.Statements">TStatements</a> accepts a few PHP statements and displays their standard output on the Web page.

   </li>

 

@@ -107,7 +107,7 @@
   <a href="?page=Controls.TextBox">TTextBox</a> represents a text input field on a Web page. It can collect single-line, multi-line or password text input from users.

   </li>

 

-  <li>*

+  <li>

   <a href="?page=Controls.TextHighlighter">TTextHighlighter</a> highlights its body content according to the specified syntax highlighter, such as PHP, XML, PRADO, etc.

   </li>

 

diff --git a/demos/quickstart/protected/pages/Controls/Statements.page b/demos/quickstart/protected/pages/Controls/Statements.page
index 28f25791..f37f1dc4 100644
--- a/demos/quickstart/protected/pages/Controls/Statements.page
+++ b/demos/quickstart/protected/pages/Controls/Statements.page
@@ -3,4 +3,39 @@
 <h1>TStatements</h1>

 <com:DocLink ClassPath="System.Web.UI.WebControls.TStatements" />

 

+<p>

+<tt>TStatements</tt> evaluates a sequence of PHP statements and displays the content rendered by the statements. To specify the PHP statements to be evaluated, set the <tt>Statements</tt> property. In a control template, <a href="?page=Configurations.Templates2#st">statement tags</a> are often used instead of the complete <a href="?page=Configurations.Templates1#ct">component tags</a> when the main purpose is to display the result rendered by some PHP statements. For example, the following two tags are equivalent,

+</p>

+<com:TTextHighlighter Language="prado" CssClass="source">

+&lt;com:TStatements&gt;

+  &lt;prop:Expression&gt;

+  setlocale(LC_ALL, 'nl_NL');

+  echo strftime("%A %e %B %Y",time());

+  &lt;/prop:Expression&gt;

+&lt;/com:TStatements&gt;

+

+&lt;%%

+  setlocale(LC_ALL, 'nl_NL');

+  echo strftime("%A %e %B %Y",time());

+%&gt;

+</com:TTextHighlighter>

+

+<p>

+<tt>TStatements</tt> evaluates the PHP statements during the rendering control lifecycle. Unlike <tt>TExpression</tt>, <tt>TStatements</tt> only displays the content 'echoed' within the statements.

+</p>

+

+<p>

+The context of the statements in a <tt>TStatements</tt> control is the control itself. That is, <tt>$this</tt> represents the control object if it is present in the statements. For example, the following statement tag will display the title of the page containing the <tt>TStatements</tt> control.

+</p>

+<com:TTextHighlighter Language="prado" CssClass="source">

+&lt;%%

+  $page=$this->Page;

+  echo $page->Title;

+%&gt;

+</com:TTextHighlighter>

+

+<p>

+Be aware, since <tt>TStatements</tt> allows execution of arbitrary PHP code, in general you should not use it to evaluate PHP code submitted by your application users.

+</p>

+

 </com:TContent>
\ No newline at end of file