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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/1998/REC-html40-19980424/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>D</title>
<link rel="stylesheet" href="../doc.css" type="text/css">
</head>
<body>
<h1>D</h1>
<dl>
<dt><a name="+DbHint"><code>+DbHint</code></a>
<dd><code>+DbHint</code> supplies autocomplete suggestions from the database.
<pre><code>
(gui 'nam '(+Var +DbHint +TextField) '*UsrNam '(nam +User) 30)
</code></pre>
This example shows a <code>+TextField</code> that has been extended with two
classes, <code>+Var</code> and <code>+DbHint</code>. <code>+Var</code>
connects the field to a variable and <code>+DbHint</code> fetches
autocomplete suggestions from the database. As you can see,
<code>+DbHint</code> is given the argument <code>'(nam +User)</code>. This
tells it to fetch the property "nam" from the class "+User". See also <a
href="refH.html#+hint">+hint</a>, <a href="refV.html#+Var">+Var</a> and <a
href="refT.html#+TextField">+TextField</a>.
</dl>
<dl>
<dt><a name="+Dflt"><code>+Dflt</code></a>
<dd>A prefix to specify a default value for a field. This is different from
'+Init' which can be overwritten with an empty value (NIL). A '+Dflt' field
will never contain NIL (unless the default value itself evaluates to NIL).
See also <a href="refI.html#+Init">+Init</a>.
</dl>
<dl>
<dt><a name="diaform"><code>(diaform 'lst prg) </code></a>
<dd><code>diaForm</code> is a form that has a dual nature in that it can
behave both as a form and as a dialog. When called from a form, by pressing
a button (POST) it shows up as a dialog. Otherwise, when called via a link
(GET), it shows up as a form. <code>diaform</code> is commonly used in
search dialogs, often together with an <code>idForm</code>. This way,
functionality to search for, select and edit objects is combined in a single
page of the application.
<pre><code>
(de choItem (Dst)
(diaform '(Dst)
(<grid> "--.-."
...
... )
(gui 'query '(+QueryChart) (cho)
...
... )
(<table> 'chart (choTtl ,"Items" 'nr '+Item)
...
... )
(<spread>
...
... ) ) )
</code></pre>
See also <a href="refF.html#form">form</a>, <a
href="refI.html#idForm">idForm</a>, <a href="refD.html#dialog">dialog</a>.
</dl>
<dl>
<dt><a name="dialog"><code>(dialog Env . Prg) </code></a>
<dd>Creates a dialog. 'Env' can contain additional css attributes, the
framework adds the css class 'dialog'. 'Prg' is the content you want to
populate the dialog with. See also <a href="doc.html#dialogs">Alerts and
dialogs</a>.
</dl>
<dl>
<dt><a name="disable"><code>(disable Flg)</code></a>
<dd>This function disables a form when called with a non-<code>NIL</code>
argument. It overrides the standard form enable/disable, in that it can
disable the form even if it would be otherwise enabled. This affects all
components in this form. The following example makes a form read-only until
Christmas:
<pre><code>
(form NIL
(disable (> (12 24) (cdr (date (date))))) # Disable whole form
(gui ..)
.. )
</code></pre>
In a disabled form, individual components can be activated using the
<code>+Rid</code> prefix class. See also <a href="refR.html#+Rid">+Rid</a>.
</dl>
<dl>
<dt><a name="delButton"><code>(delButton Able @Txt) </code></a>
<dd>A delete button, marks an object as deleted. Includes a confirmation
dialog. See also <a href="refA.html#ask">ask</a>, <a
href="refN.html#note">note</a>, <a href="refF.html#+Force"></a>, <a
href="refR.html#+Rid">+Rid</a>, <a href="refA.html#+Able">+Able</a>, <a
href="refT.html#+Tip">+Tip</a>, <a href="refB.html#+Button">+Button</a> and
<a href="refG.html#gui">gui</a>.
</dl>
<dl>
<dt><a name="+DelRowButton"><code>+DelRowButton</code></a>
<dd>A button used to delete one row from a chart. See also <a
href="refC.html#chart">chart</a>, <a href="refT.html#+Tiny">+Tiny</a>, <a
href="refR.html#+Rid">+Rid</a>, <a href="refJ.html#+JS">+JS</a>, <a
href="refA.html#+Able">+Able</a>, <a href="refT.html#+Tip">+Tip</a> and <a
href="refB.html#+Button">+Button</a>.
</dl>
<dl>
<dt><a name="+DnButton"><code>+DnButton</code></a>
<dd>A button used scroll a chart one row down. See also <a
href="refC.html#chart">chart</a>, <a href="refT.html#+Tiny">+Tiny</a>, <a
href="refR.html#+Rid">+Rid</a>, <a href="refJ.html#+JS">+JS</a>, <a
href="refA.html#+Able">+Able</a>, <a
href="refG.html#+GoButton">+GoButton</a>, <a
href="refB.html#+Button">+Button</a> and <a
href="../app.html#scrolling">scrolling</a>.
</dl>
<dl>
<dt><a name="+Drop"><code>+Drop</code></a>
<dd>+Drop is a prefix class for +Button and makes the most sense in
combination with +UpField, for file uploads. The following example comes
from the demo app in the PicoLisp distribution, in app/item.l:
<pre><code>
(gui '(+Able +UpField) '(not (: home obj jpg)) 30)
(gui '(+Drop +Button) '(field -1)
'(if (: home obj jpg) ,"Uninstall" ,"Install")
'(cond
((: home obj jpg)
(ask ,"Uninstall Picture?"
(put!> (: home top 1 obj) 'jpg NIL) ) )
((: drop) (blob! (: home obj) 'jpg @)) ) )
</code></pre>
Note "'(field -1)" in the example above. This part refers to the +UpField.
See also <a href="refB.html#+Button">+Button</a>, <a
href="refF.html#field">field</a>, <a href="refA.html#+Able">+Able</a>, <a
href="refU.html#+UpField">+UpField</a> and <a href="refG.html#gui">gui</a>.
</dl>
<dl>
<dt><a name="+DstButton"><code>+DstButton</code></a>
<dd><code>+DstButton</code>, Destination button, has a dual behaviour,
manifesting itself as a button or a plain link. The button is always labeled
as "@", but if <code>+DstButton</code> is used in a dialog which chooses an
object to be stored in a field of the calling form it manifests as a button.
In this case, pressing the button stores the object in the destination
field. Otherwise, <code>+DstButton</code> manifests itself as a plain link
and clicking the link causes a jump to that object. Typical usage is in
choice (search) dialogs, which are used both for jumping to objects and for
selecting objects in other forms.<br>
The following example uses a <code>+DstButton</code> when presenting the
search result in a <code>QueryChart</code>. Since we are not about to choose
an object to be stored in a field of the calling form, this
<code>+DstButton</code> will manifest as a link and cause a jump to an
object.<br> Given the following 'put'- function:
<pre><code>
'((This) (list This This (: pa) (: ma) (: mate) (: job) (: dat)))
</code></pre>
And presenting the result in a table:
<pre><code>
(<table> 'chart NIL
'((btn) (NIL "Name") (NIL "Father") (NIL "Mother") (NIL "Partner") (NIL "Occupation") (NIL "born"))
(do (cho)
(<row> (alternating)
(gui 1 '(+DstButton) Dst)
(gui 2 '(+ObjView +TextField) '(: nm))
(gui 3 '(+ObjView +TextField) '(: nm))
(gui 4 '(+ObjView +TextField) '(: nm))
(gui 5 '(+ObjView +TextField) '(: nm))
(gui 6 '(+TextField))
(gui 7 '(+DateField)) ) ) )
</code></pre>
See also <a href="refS.html#+Set">+Set</a>, <a
href="refA.html#+Able">+Able</a>, <a href="refC.html#+Close">+Close</a>, <a
href="refP.html#+PickButton">+PickButton</a>.
</dl>
<dl>
<dt><a name="+DateField"><code>+DateField</code></a>
<dd>+DateField accepts and returns a date value.
<pre><code>
(gui '(+DateField) 10)
</code></pre>
The date format displayed and accepted by the +DateField is determined by
the current locale, and the field returns an error when a date not matching
the locale is entered. +DateField does some extra work to handle user input,
independant of locale. Entering a small number is expanded to mean day of
the current month, and entering larger numbers expand to day/ month or
day/month/year.
<ul>
<li>Entering "3" means the third day of the current month.</li>
<li>"031" or "0301" both expand to 3 January of the current year.</li>
<li>"01023" or "010203" expands to 1 February, 2003.</li>
</ul>
See also <a href="refT.html#+TextField">+TextField</a>, <a
href="refG.html#gui">gui</a>, <a href="refD.html#date">date</a> and <a
href="../app.html#timeDateFields">Time & Date</a>.
</dl>
</body>
</html>
|
