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var AdminWriteForm = {
form: null,
previewTimeout: null,
previewRequest: null,
init: function(opts) {
opts = opts || {};
this.opts = opts;
this.form = document.forms[opts.pages ? 'pageForm' : 'postForm'];
this.isFixed = false;
addEvent(this.form, 'submit', this.onSubmit);
if (!opts.pages)
addEvent(this.form.title, 'input', this.onInput);
addEvent(this.form.text, 'input', this.onInput);
addEvent(ge('toggle_wrap'), 'click', this.onToggleWrapClick);
if (this.form.text.value !== '')
this.showPreview();
// TODO make it more clever and context-aware
/*var draft = Draft.get();
if (draft.title)
this.form.title.value = draft.title;
if (draft.text)
this.form.text.value = draft.text;*/
addEvent(window, 'scroll', this.onScroll);
addEvent(window, 'resize', this.onResize);
},
showPreview: function() {
if (this.previewRequest !== null) {
this.previewRequest.abort();
}
this.previewRequest = ajax.post('/admin/markdown-preview.ajax', {
title: this.form.elements.title.value,
md: this.form.elements.text.value,
use_image_previews: this.opts.pages ? 1 : 0
}, function(err, response) {
if (err)
return console.error(err);
ge('preview_html').innerHTML = response.html;
});
},
onSubmit: function(event) {
try {
var fields = ['title', 'text'];
if (!this.opts.pages)
fields.push('tags');
if (this.opts.edit) {
fields.push('new_short_name');
} else {
fields.push('short_name');
}
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
if (event.target.elements[field].value.trim() === '')
throw 'no_'+field
}
// Draft.reset();
} catch (e) {
var error = typeof e == 'string' ? lang((this.opts.pages ? 'err_pages_' : 'err_blog_')+e) : e.message;
alert(error);
console.error(e);
return cancelEvent(event);
}
},
onToggleWrapClick: function(e) {
var textarea = this.form.elements.text;
if (!hasClass(textarea, 'nowrap')) {
addClass(textarea, 'nowrap');
} else {
removeClass(textarea, 'nowrap');
}
return cancelEvent(e);
},
onInput: function(e) {
if (this.previewTimeout !== null) {
clearTimeout(this.previewTimeout);
}
this.previewTimeout = setTimeout(function() {
this.previewTimeout = null;
this.showPreview();
// Draft[e.target.name === 'title' ? 'setTitle' : 'setText'](e.target.value);
}.bind(this), 300);
},
onScroll: function() {
var ANCHOR_TOP = 10;
var y = window.pageYOffset;
var form = this.form;
var td = ge('form_first_cell');
var ph = ge('form_placeholder');
var rect = td.getBoundingClientRect();
if (rect.top <= ANCHOR_TOP && !this.isFixed) {
ph.style.height = form.getBoundingClientRect().height+'px';
var w = (rect.width - (parseInt(getComputedStyle(td).paddingRight, 10) || 0));
form.style.display = 'block';
form.style.width = w+'px';
form.style.position = 'fixed';
form.style.top = ANCHOR_TOP+'px';
this.isFixed = true;
} else if (rect.top > ANCHOR_TOP && this.isFixed) {
form.style.display = '';
form.style.width = '';
form.style.position = '';
form.style.position = '';
ph.style.height = '';
this.isFixed = false;
}
},
onResize: function() {
if (this.isFixed) {
var form = this.form;
var td = ge('form_first_cell');
var ph = ge('form_placeholder');
var rect = td.getBoundingClientRect();
var pr = parseInt(getComputedStyle(td).paddingRight, 10) || 0;
ph.style.height = form.getBoundingClientRect().height+'px';
form.style.width = (rect.width - pr) + 'px';
}
}
};
bindEventHandlers(AdminWriteForm);
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