root/js/webpac.js

// WebPAC AJAX API
//
// Documented in this code only, I'm afraid. Beware of dragons!
// Dobrica Pavlinusic dpavlin(at)rot13(dot)org 2005-11-22

/*
        load another template
*/
function load_template(template_name) {

        var old_template = $('template_name').value;

        Logger.info('load_template: '+template_name+' (old: '+old_template+')');

        if (template_name == old_template) {
                Logger.error('why reload same template?');
                return false;
        }

        $('template_name').value = template_name;
        submit_results_form();
        return false;
}

/*
        pager
*/
function load_results_page(page_nr) {

        if (parseInt(page_nr) != page_nr) {
                Logger.error("load_results_page can't parseInt "+page_nr);
                return false;
        }

        var old_page = get_page_nr();

        if (page_nr < 1) {
                Logger.error("load_results_page called with '"+page_nr+"' < 1");
                return false;
        }

        Logger.info('load_results_page: '+page_nr+' (from page: '+old_page+')');

        if (page_nr == old_page) {
                Logger.error('why reload same page?');
                return false;
        }

        $('page_nr').value = page_nr;
        submit_results_form();

        return false;
}

function get_page_nr() {
        var page_nr = parseInt( $('page_nr').value ) || 1;
        return page_nr;
}

function reset_page_nr( nr ) {
        if (! nr) nr = 1;
        Logger.info('reset_page_nr to '+nr);
        page_nr = nr;
        $('page_nr').value = page_nr;
}

/* syntaxtic sugar */
function set_page_nr(nr) {
        return load_results_page(nr);
}

function next_page() {
        load_results_page( get_page_nr() + 1 );
        return false;
}

function prev_page() {
        load_results_page( get_page_nr() - 1 );
        return false;
}

/*
        submit results form using AJAX
*/
function submit_results_form() {
        var results_form = $('results_form');

        if (results_form) {
                var form_params = Form.serialize( results_form );

                Logger.debug('Ajax.Updater(results,/results) '+form_params);

                new Ajax.Updater( 'results', '/search/results', {
                        parameters: form_params,
                        asynchronous: 1,
                        onLoading: function(request) {
                                show_searching();
                        },
                        onLoaded: function(request) {
                                hide_searching();
                        }
                } ) ;
                return false;
        } else {
                Logger.debug('no results_form element');
                return undef;
        }
        return false;
}

/*
        helper functions for submit_results_form()
*/
function show_searching() {
        Logger.debug('show_searching');
        Element.show('searching');
//      new Effect.Fade('results', { duration: 0.3 });
        return false;
}

function hide_searching() {
        Logger.debug('hide_searching');
        Element.hide('searching');
//      new Effect.Highlight('results');
//      new Effect.Appear('results', { duration: 0.3 });
        return false;
}

/*
        load record nr in some template
*/

function load_rec(record_uri, tmp_template_filename) {
        if (! tmp_template_filename) tmp_template_filename = template_filename;
        Logger.info('load_rec '+record_uri+' in '+tmp_template_filename);

        var results_form = $('results_form');

        if (results_form) {
                var args = '?record_uri='+record_uri+'&template_filename='+tmp_template_filename;
                Logger.debug('Ajax.Updater(results,/search/record) '+args);

                new Ajax.Updater( 'results', '/search/record'+args, {
                        asynchronous: 1,
                        onLoading: function(request) {
                                show_searching();
                        },
                        onLoaded: function(request) {
                                hide_searching();
                        }
                } ) ;
                return false;
        } else {
                Logger.debug('no results_form element');
                return undef;
        }
        return false;
}

/*
        autocompleter which isn't (a suggest box)
        - don't just on first option on appear
        - removed fade-in/out effect
        - added configurable width (content width? centered?)
        - add icon which means suggest

        hopefully, this implementation won't break when I update prototype next time :-)
*/


Ajax.Suggest = Class.create();
Logger.debug('Created Ajax.Suggest Class');
Object.extend(Object.extend(Ajax.Suggest.prototype, Ajax.Autocompleter.prototype), {
  initialize: function(element, update, url, options) {
          this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
    this.ignoreReturn = true;

    Logger.debug('Ajax.Sugget initialize '+element+','+update+','+url);

    this.options.onShow = function(element, update) {
      if(!update.style.position || update.style.position=='absolute') {
        update.style.position = 'absolute';
        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
      }
      new Element.show(update);
      Logger.debug('Ajax.Suggest.onShow');
    };

    this.options.onHide = function(element, update) {
        new Element.hide(update);
        Logger.debug('Ajax.Suggest.onHide');
    };
  },

  getUpdatedChoices: function() {
    entry = encodeURIComponent(this.options.paramName) + '=' +
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams)
      this.options.parameters += '&' + this.options.defaultParams;

    Logger.debug('Ajax.Suggest called '+this.url);
    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    Logger.debug('Ajax.Suggest onComplete called');
    this.updateChoices(request.responseText);
  },

  markPrevious: function() {
    if(this.index > 0) this.index--
    //  else this.index = this.entryCount-1;
  },

  markNext: function() {
    if(this.index < this.entryCount-1) this.index++
    //  else this.index = 0;
  }

});


1	// WebPAC AJAX API
2	//
3	// Documented in this code only, I'm afraid. Beware of dragons!
4	// Dobrica Pavlinusic dpavlin(at)rot13(dot)org 2005-11-22
5
6	/*
7	load another template
8	*/
9	function load_template(template_name) {
10
11	var old_template = $('template_name').value;
12
13	Logger.info('load_template: '+template_name+' (old: '+old_template+')');
14
15	if (template_name == old_template) {
16	Logger.error('why reload same template?');
17	return false;
18	}
19
20	$('template_name').value = template_name;
21	submit_results_form();
22	return false;
23	}
24
25	/*
26	pager
27	*/
28	function load_results_page(page_nr) {
29
30	if (parseInt(page_nr) != page_nr) {
31	Logger.error("load_results_page can't parseInt "+page_nr);
32	return false;
33	}
34
35	var old_page = get_page_nr();
36
37	if (page_nr < 1) {
38	Logger.error("load_results_page called with '"+page_nr+"' < 1");
39	return false;
40	}
41
42	Logger.info('load_results_page: '+page_nr+' (from page: '+old_page+')');
43
44	if (page_nr == old_page) {
45	Logger.error('why reload same page?');
46	return false;
47	}
48
49	$('page_nr').value = page_nr;
50	submit_results_form();
51
52	return false;
53	}
54
55	function get_page_nr() {
56	var page_nr = parseInt( $('page_nr').value ) \|\| 1;
57	return page_nr;
58	}
59
60	function reset_page_nr( nr ) {
61	if (! nr) nr = 1;
62	Logger.info('reset_page_nr to '+nr);
63	page_nr = nr;
64	$('page_nr').value = page_nr;
65	}
66
67	/* syntaxtic sugar */
68	function set_page_nr(nr) {
69	return load_results_page(nr);
70	}
71
72	function next_page() {
73	load_results_page( get_page_nr() + 1 );
74	return false;
75	}
76
77	function prev_page() {
78	load_results_page( get_page_nr() - 1 );
79	return false;
80	}
81
82	/*
83	submit results form using AJAX
84	*/
85	function submit_results_form() {
86	var results_form = $('results_form');
87
88	if (results_form) {
89	var form_params = Form.serialize( results_form );
90
91	Logger.debug('Ajax.Updater(results,/results) '+form_params);
92
93	new Ajax.Updater( 'results', '/search/results', {
94	parameters: form_params,
95	asynchronous: 1,
96	onLoading: function(request) {
97	show_searching();
98	},
99	onLoaded: function(request) {
100	hide_searching();
101	}
102	} ) ;
103	return false;
104	} else {
105	Logger.debug('no results_form element');
106	return undef;
107	}
108	return false;
109	}
110
111	/*
112	helper functions for submit_results_form()
113	*/
114	function show_searching() {
115	Logger.debug('show_searching');
116	Element.show('searching');
117	// new Effect.Fade('results', { duration: 0.3 });
118	return false;
119	}
120
121	function hide_searching() {
122	Logger.debug('hide_searching');
123	Element.hide('searching');
124	// new Effect.Highlight('results');
125	// new Effect.Appear('results', { duration: 0.3 });
126	return false;
127	}
128
129	/*
130	load record nr in some template
131	*/
132
133	function load_rec(record_uri, tmp_template_filename) {
134	if (! tmp_template_filename) tmp_template_filename = template_filename;
135	Logger.info('load_rec '+record_uri+' in '+tmp_template_filename);
136
137	var results_form = $('results_form');
138
139	if (results_form) {
140	var args = '?record_uri='+record_uri+'&template_filename='+tmp_template_filename;
141	Logger.debug('Ajax.Updater(results,/search/record) '+args);
142
143	new Ajax.Updater( 'results', '/search/record'+args, {
144	asynchronous: 1,
145	onLoading: function(request) {
146	show_searching();
147	},
148	onLoaded: function(request) {
149	hide_searching();
150	}
151	} ) ;
152	return false;
153	} else {
154	Logger.debug('no results_form element');
155	return undef;
156	}
157	return false;
158	}
159
160	/*
161	autocompleter which isn't (a suggest box)
162	- don't just on first option on appear
163	- removed fade-in/out effect
164	- added configurable width (content width? centered?)
165	- add icon which means suggest
166
167	hopefully, this implementation won't break when I update prototype next time :-)
168	*/
169
170
171	Ajax.Suggest = Class.create();
172	Logger.debug('Created Ajax.Suggest Class');
173	Object.extend(Object.extend(Ajax.Suggest.prototype, Ajax.Autocompleter.prototype), {
174	initialize: function(element, update, url, options) {
175	this.baseInitialize(element, update, options);
176	this.options.asynchronous = true;
177	this.options.onComplete = this.onComplete.bind(this);
178	this.options.defaultParams = this.options.parameters \|\| null;
179	this.url = url;
180	this.ignoreReturn = true;
181
182	Logger.debug('Ajax.Sugget initialize '+element+','+update+','+url);
183
184	this.options.onShow = function(element, update) {
185	if(!update.style.position \|\| update.style.position=='absolute') {
186	update.style.position = 'absolute';
187	Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
188	}
189	new Element.show(update);
190	Logger.debug('Ajax.Suggest.onShow');
191	};
192
193	this.options.onHide = function(element, update) {
194	new Element.hide(update);
195	Logger.debug('Ajax.Suggest.onHide');
196	};
197	},
198
199	getUpdatedChoices: function() {
200	entry = encodeURIComponent(this.options.paramName) + '=' +
201	encodeURIComponent(this.getToken());
202
203	this.options.parameters = this.options.callback ?
204	this.options.callback(this.element, entry) : entry;
205
206	if(this.options.defaultParams)
207	this.options.parameters += '&' + this.options.defaultParams;
208
209	Logger.debug('Ajax.Suggest called '+this.url);
210	new Ajax.Request(this.url, this.options);
211	},
212
213	onComplete: function(request) {
214	Logger.debug('Ajax.Suggest onComplete called');
215	this.updateChoices(request.responseText);
216	},
217
218	markPrevious: function() {
219	if(this.index > 0) this.index--
220	// else this.index = this.entryCount-1;
221	},
222
223	markNext: function() {
224	if(this.index < this.entryCount-1) this.index++
225	// else this.index = 0;
226	}
227
228	});
229
230