seanvikoren/Test.cfm

## Test.cfm
<!--- Hello.cfm =====================================--->
<html>
   <head>
      <title>Invoking Component Methods</title>
   </head>
   <body>
      <h1>Invoking Component Methods</h1>

      <!-- ====================================================================================== -->
      <h2>Example 1: Transient Instantiation</h2>

      <cfinvoke component = "Images" method="ImageFlipper" returnvariable="imgpath">
         <cfinvokeargument name="directory" value="Images/Runners">
      </cfinvoke>

      <cfoutput><img src="#imgpath#"/></cfoutput>

      <!-- ====================================================================================== -->
      <h2>Example 2: Using attributes rather than cfinvokeargument</h2>

      <cfinvoke
         component = "Images"
         method="ImageFlipper"
         returnvariable="imgpath"
         directory="Images/Runners">

      <cfoutput><img src="#imgpath#"/></cfoutput>

      <!-- ====================================================================================== -->
      <h2>Example 3: Passing the arguments using argumentCollection</h2>

      <cfset args = StructNew()>
      <cfset args.directory = "Images/Runners">
      <cfset args.extensions = "jpg">

      <cfinvoke
         component="Images"
         method="ImageFlipper"
         argumentCollection="#args#"
         returnVariable="imgpath">

      <cfoutput><img src="#imgpath#"/></cfoutput>

      <!-- ====================================================================================== -->
      <h2>Example 4: Separate instantiation and method invocation</h2>

      <cfset args = StructNew()>
      <cfset args.directory = "Images/Runners">
      <cfset args.extensions = "jpg">

      <cfobject name="objImage" component="Images2">

      <cfloop index="i" from="1" to="7">
         <cfinvoke
            component="#objImage#"
            method="ImageFlipper"
            directory="Images/Runners"
            extensions = "jpg"
            returnVariable="imgpath">

         <cfoutput><img src="#imgpath#"/></cfoutput>
      </cfloop>
   </body>
</html>

## Util.cfc
<!--- Util.cfc =====================================--->
<!---
    Here we demonstrate a basic ColdFusion component with embedded cfScript, SQL, and JavaScript.
    NOTE: This is not running code and therefore has not been tested and is intended as an example only.
--->

<cfcomponent>

    <cffunction name="ImageFlipper" access="public" returntype="string">
        <cfargument name="directory" type="string" required="true">
        <cfargument name="extensions" type="string" default="jpg,gif">

        <cfset aryImages = getFileList(arguments.directory,arguments.extensions)>
        <cfparam name="SESSION.picture" default="0">
        <cfset SESSION.picture = SESSION.picture + 1>

        <cfif SESSION.picture GT ArrayLen(aryImages)>
            <cfset SESSION.picture = 1>
        <cfelse>
            <cfset SESSION.picture = -1>
        </cfif>
        <cfset imagepath="#arguments.directory#/#aryImages[SESSION.picture]#">
        <cfreturn imagepath>
    </cffunction>

    <!--- Here we drop into cfScript syntax --->
    <cfscript>

        public void function foo()
        {
            WriteOutput("Method foo() called<br>");
        }

    </cfscript>
    <cffunction name="WriteList" access="public" returntype="string">
        <!--- Here we drop into SQL syntax --->
        <cfquery name="GetParks" datasource="cfdocexamples" cachedwithin="#CreateTimeSpan(0, 6, 0, 0)#">
            SELECT PARKNAME, REGION, STATE
            FROM Parks
            ORDER BY ParkName, State
        </cfquery>
        <cfset thisString = "This is a string">
        <cfoutput>
            <b>The thisString variable in ColdFusion</b><br>
            #thisString#<br>
            <br>
            <strong>
                In a JavaScript script, convert thisString Variable to JavaScript
                and output the resulting variable:
            </strong>
            <br>
            <!--- Here we drop into JavaScript syntax --->
            <script type="text/javascript" language="JavaScript">
                var #ToScript(thisString, "jsVar")#;
                document.write("jsVar in JavaScript is: " + jsVar);
            </script>
        </cfoutput>
        <cfoutput query="GetParks" startrow="#StartRow#" maxrows="#MaxRows#">
            <tr>
                <td valign="top" bgcolor="ffffed">
                    <b>#GetParks.CurrentRow#</b>
                </td>
                <td valign="top">
                    <font size="-1">#ParkName#</font>
                </td>
                <td valign="top">
                    <font size="-1">#Region#</font>
                </td>
                <td valign="top">
                    <font size="-1">#State#</font>
                </td>
            </tr>
        </cfoutput>
    </cffunction>

</cfcomponent>

## Util2.cfc
<!--- Util2.cfc =====================================--->
<cfcomponent extends="Util">
    <cffunction name="CreateImageTable" access="public" returntype="string">
        <cfargument name="directory" type="string" required="true">
        <cfargument name="columns" type="numeric" default="2">
        <cfargument name="extensions" type="string" default="jpg,gif">

        <cfset aryImages = getFileList(arguments.directory,arguments.extensions)>
        <cfset rows = Ceiling(ArrayLen(aryImages)/columns)>
        <cfset picture = 1>

        <cfsavecontent variable="ReturnTable">
            <table border="1">
                <cfloop index="i" from="1" to="#rows#">
                    <tr>
                        <cfloop index="j" from="1" to="#columns#">
                            <td>
                            <cfoutput>
                                <img src="#arguments.directory#/#aryImages[picture]#">
                            </cfoutput>
                            </td>
                            <cfset picture = picture + 1>
                        </cfloop>
                    </tr>
                </cfloop>
            </table>
        </cfsavecontent>
        <cfreturn ReturnTable>
    </cffunction>
</cfcomponent>
	<!--- Hello.cfm =====================================--->
	<html>
	<head>
	<title>Invoking Component Methods</title>
	</head>
	<body>
	<h1>Invoking Component Methods</h1>

	<!-- ====================================================================================== -->
	<h2>Example 1: Transient Instantiation</h2>

	<cfinvoke component = "Images" method="ImageFlipper" returnvariable="imgpath">
	<cfinvokeargument name="directory" value="Images/Runners">
	</cfinvoke>

	<cfoutput><img src="#imgpath#"/></cfoutput>

	<!-- ====================================================================================== -->
	<h2>Example 2: Using attributes rather than cfinvokeargument</h2>

	<cfinvoke
	component = "Images"
	method="ImageFlipper"
	returnvariable="imgpath"
	directory="Images/Runners">

	<cfoutput><img src="#imgpath#"/></cfoutput>

	<!-- ====================================================================================== -->
	<h2>Example 3: Passing the arguments using argumentCollection</h2>

	<cfset args = StructNew()>
	<cfset args.directory = "Images/Runners">
	<cfset args.extensions = "jpg">

	<cfinvoke
	component="Images"
	method="ImageFlipper"
	argumentCollection="#args#"
	returnVariable="imgpath">

	<cfoutput><img src="#imgpath#"/></cfoutput>

	<!-- ====================================================================================== -->
	<h2>Example 4: Separate instantiation and method invocation</h2>

	<cfset args = StructNew()>
	<cfset args.directory = "Images/Runners">
	<cfset args.extensions = "jpg">

	<cfobject name="objImage" component="Images2">

	<cfloop index="i" from="1" to="7">
	<cfinvoke
	component="#objImage#"
	method="ImageFlipper"
	directory="Images/Runners"
	extensions = "jpg"
	returnVariable="imgpath">

	<cfoutput><img src="#imgpath#"/></cfoutput>
	</cfloop>
	</body>
	</html>
	<!--- Util.cfc =====================================--->
	<!---
	Here we demonstrate a basic ColdFusion component with embedded cfScript, SQL, and JavaScript.
	NOTE: This is not running code and therefore has not been tested and is intended as an example only.
	--->

	<cfcomponent>

	<cffunction name="ImageFlipper" access="public" returntype="string">
	<cfargument name="directory" type="string" required="true">
	<cfargument name="extensions" type="string" default="jpg,gif">

	<cfset aryImages = getFileList(arguments.directory,arguments.extensions)>
	<cfparam name="SESSION.picture" default="0">
	<cfset SESSION.picture = SESSION.picture + 1>

	<cfif SESSION.picture GT ArrayLen(aryImages)>
	<cfset SESSION.picture = 1>
	<cfelse>
	<cfset SESSION.picture = -1>
	</cfif>
	<cfset imagepath="#arguments.directory#/#aryImages[SESSION.picture]#">
	<cfreturn imagepath>
	</cffunction>

	<!--- Here we drop into cfScript syntax --->
	<cfscript>

	public void function foo()
	{
	WriteOutput("Method foo() called<br>");
	}

	</cfscript>
	<cffunction name="WriteList" access="public" returntype="string">
	<!--- Here we drop into SQL syntax --->
	<cfquery name="GetParks" datasource="cfdocexamples" cachedwithin="#CreateTimeSpan(0, 6, 0, 0)#">
	SELECT PARKNAME, REGION, STATE
	FROM Parks
	ORDER BY ParkName, State
	</cfquery>
	<cfset thisString = "This is a string">
	<cfoutput>
	<b>The thisString variable in ColdFusion</b><br>
	#thisString#<br>
	<br>
	<strong>
	In a JavaScript script, convert thisString Variable to JavaScript
	and output the resulting variable:
	</strong>
	<br>
	<!--- Here we drop into JavaScript syntax --->
	<script type="text/javascript" language="JavaScript">
	var #ToScript(thisString, "jsVar")#;
	document.write("jsVar in JavaScript is: " + jsVar);
	</script>
	</cfoutput>
	<cfoutput query="GetParks" startrow="#StartRow#" maxrows="#MaxRows#">
	<tr>
	<td valign="top" bgcolor="ffffed">
	<b>#GetParks.CurrentRow#</b>
	</td>
	<td valign="top">
	<font size="-1">#ParkName#</font>
	</td>
	<td valign="top">
	<font size="-1">#Region#</font>
	</td>
	<td valign="top">
	<font size="-1">#State#</font>
	</td>
	</tr>
	</cfoutput>
	</cffunction>

	</cfcomponent>
	<!--- Util2.cfc =====================================--->
	<cfcomponent extends="Util">
	<cffunction name="CreateImageTable" access="public" returntype="string">
	<cfargument name="directory" type="string" required="true">
	<cfargument name="columns" type="numeric" default="2">
	<cfargument name="extensions" type="string" default="jpg,gif">

	<cfset aryImages = getFileList(arguments.directory,arguments.extensions)>
	<cfset rows = Ceiling(ArrayLen(aryImages)/columns)>
	<cfset picture = 1>

	<cfsavecontent variable="ReturnTable">
	<table border="1">
	<cfloop index="i" from="1" to="#rows#">
	<tr>
	<cfloop index="j" from="1" to="#columns#">
	<td>
	<cfoutput>
	<img src="#arguments.directory#/#aryImages[picture]#">
	</cfoutput>
	</td>
	<cfset picture = picture + 1>
	</cfloop>
	</tr>
	</cfloop>
	</table>
	</cfsavecontent>
	<cfreturn ReturnTable>
	</cffunction>
	</cfcomponent>