Feature Proposal: Standard Mechanism to Add Content to the HEAD Section

Motivation
Description
Impact and Available Solutions
Discussion:

Motivation

Some plugins (like EditTablePlugin and XpTrackerPlugin) need to add some javavascript and/or custom css to topics.

Currently, there are only two ways to do that:

Embeed the script/css into the topic text (non-standard, but work)
use the hack found in EditTablePlugin:

if( ( $_[0] =~ m/^[<][!]DOCTYPE/ ) {
$_[0] =~ s/([<]\/head[>])/$text-to-add$1/i;
}

Description

Provide a method in FuncDotPm that allows Plugins to register chunks of text to be included in the HEAD section.

From the PODs in the patch:


---+++ addToHTMLHead($tag,$header)
Adds =$header= to the HTML header (the <head> tags)
This is useful for plugins that want to include some javascript library or a custom css.
   * =$tag= - Unique ID to prevent duplicated. It's suggested that Plugins use a suffix to prevent name clashed (ie: EDITTABLEPLUGIN_JSCALENDAR)
   * =$header= - the text to be added to the <head> section

All tags pressent in =$header= will be expanded before being inserted into the =<head>= section.

*Since:* TWiki::Plugins::VERSION 1.026 

example:
TWiki::Func::addToHTMLHead('PATTERN_STYLE','<link id="twikiLayoutCss" rel="stylesheet" type="text/css" href="http://acsele29:5050/develop/DEVELOP/pub/TWiki/PatternSkin/layout.css" media="all" />')

EditTablePlugin was modified to use this enhancement instead of it's old hack.

-- RafaelAlvarez - 18 Jul 2005

Impact and Available Solutions

WhatDoesItAffect:	Rendering, Plugins
AffectedExtensions:	EditTablePlugin
HaveQuickFixFor:

Note: Patch is attached as https://www.twiki.org/p/pub/Codev/MechanismToAddContentToHEAD/headerhook4662.diff. The patch is against DEVELOPBranch r4662.

Discussion:

Being able to add into the heading section of the generated page in a systematic way is an urgent need. Thanks.

-- ThomasWeigert - 18 Jul 2005

OK, I agree, also needed for ActionTrackerPlugin. Added Bugs:Item128, replacing this topic.

-- CrawfordCurrie - 21 Jul 2005

hmm, CrawfordCurrie beat me to it. Up in SVN 4680

-- RafaelAlvarez - 21 Jul 2005

Heh; I applied your patch, so I cheated hehe!

-- CrawfordCurrie - 21 Jul 2005

This is already in the core, sin DakarRelease

-- RafaelAlvarez - 08 Aug 2008

ChangeProposalForm
TopicClassification	FeatureRequest
TopicSummary	Standard Mechanism to Add Content to the HEAD Section
CurrentState	MergedToCore
CommittedDeveloper	RafaelAlvarez
ReasonForDecision	ConsensusReached
DateOfCommitment
ConcernRaisedBy
BugTracking
OutstandingIssues
RelatedTopics
InterestedParties
ProposedFor	DakarRelease
TWikiContributors	RafaelAlvarez CrawfordCurrie

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
diff	headerhook4662.diff	r1	manage	5.1 K	2005-07-18 - 00:32	RafaelAlvarez	Diff against 4662

Topic revision: r6 - 2008-08-08 - RafaelAlvarez

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