Manual Kompozer 07 (page 17 of 58) (English)

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KompoZer User Guide — 17 December 2007 Based on version 0.7.10 17

3.9 Forms

3.9.1 Introduction

Forms provide a mechanism by which a visitor to a

site may send data to as sever for processing. This may

be as simple as a box to write a message for e-mailing

or as complex as looking up items from a catalogue

and sending an order to a supplier. Forms collect data

typed in or collected from check boxes or lists and

pass them to the server. It follows that forms can be

used only in association with compatible software

running on the server.

Forms may be placed on standard web pages and

act as block level elements. In normal view KompoZer

shows forms surrounded by a dotted cyan box. Forms

may contain other standard block level elements

(paragraphs, headings …) as well as several specific

elements known as ‘form controls’ which are designed

for data collection. Since these form controls are es-

sentially inline elements they must be laid out inside

block level elements (typically paragraphs though divs

would be equally suitable).

Each item of data sent to the server is tagged with

information about which control has sent it. This is

done by naming each control. Thus designers must

give a unique name to each control to be used.

The data collected by a form will be sent to a URL

specified in an element ‘action’ which KompoZer will

add to the form. This URL is often on the server that

hosts the web page but does not have to be. The data

will be processed using one of two methods known as

‘GET’ or ‘POST’ which also need to be specified. These

details will be available from the provider of the asso-

ciated software.

3.9.2 To set up a form

1 Click the form button.

2 In the Form properties window give the

form a name of your choosing

3 Complete the Action box with the correct URL

and select the appropriate method

4 ‘Encoding’ and ‘Target Frame’ will frequently not

be required but, if they are, select ‘More Proper-

ties’ and complete the boxes

5 Click OK

6 On the form place any headings, paragraphs and

images ensuring that there is a placeholder for

any controls needed. (If blank placeholders are

needed it is probably sensible to put some dum-

my text in now and delete it later.)

7 Where controls are needed click the correspond-

ing placeholder and using the drop down box

beside the Form button select the required con-

trol

8 Give each control a unique name

9 Each control has specific information which

needs to be entered. Enter it into the box in the

window which appears

Note Since this is a guide to using KompoZer

and not to designing forms this is as far as we

go.

3.9.3 Form control styles

If the standard form styles do not appeal it is

possible by the use of styles to customise them to

personal preferences. For those familiar with using

styles some specific details are given in section 4.2.5.3.

3.10 Layers

3.10.1 What layers are

One of KompoZer's ‘Tip of the day’ says “Did you

know that ... you can move elements? Just place the

caret in the block you'd like to move and click once on

the Layer button to make the block movable.”

Items forming layers are taken out of the normal

document flow and placed in positions defined on the

page absolutely e.g. in positions fixed relative to the

page boundary.

While layers introduce a level of flexibility to page

design they also involve complexities that newcomers

may wish to avoid. This section is therefore for those

who wish to delve further.

3.10.2 Creating layers

To create a layer.

1 Click in the block that you want to format as a

layer.

2 Click the layer button on the Format (2)

toolbar.

The block becomes a ‘Layer’. Layers have

sizing boxes which allow the size to be altered. At the

top of the layer is a positioning handle (denoted by a

four-way arrow). To move the layer click and drag the

handle.

Layers do not have to consist

of a single block – any sequence

of elements that can be selected

together can be converted into a

layer. This may be several para-

graphs with or without head-

ings, images and tables.

Layers allow items to be

placed on a page so that the absolute position, relative

to the page, is defined. This provides a facility common

in drawing and desk top publishing programs and

allows items to be overlaid on top of each other. As

such it is a very powerful tool.

Text items normally have transparent background

so when overlaid become confused. By formatting

them with a background colour they become solid.

Similarly tables with solid background and non-trans-

parent images may be overlaid on each other to pro-

duce clear effects.

3.10.3 Characteristics of layers

Items converted to layers have several characteris-

tics which differ from ‘normal' items.

Layers in KompoZer are contained in ‘div’ ele-

ments. (For more on ‘div’ see section 4.5)

Layers break out of the normal flow in which

each block follows the previous and precedes the

next.

Layers, as created by KompoZer, have defined

width so do not accommodate to narrowing or

widening the viewing window.

Layers do not however have defined height so

will accommodate to changes in text size select-

ed in the browser.

Layers, as created, are characterised by three

parameters ‘top’, ’left’, and ‘width’. These define,

in pixels, how far the top left hand corner of the

layer is from the top left hand origin of the page

and how wide the layer is.

Location of posi-

tioning handle

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