www.gusucode.com > wordpress PHP博客系统英文版 v4.5.1PHP源码程序 > wordpress PHP博客系统英文版 v4.5.1/wordpress/wordpress/wp-admin/js/image-edit.js
/* global imageEditL10n, ajaxurl, confirm */
(function($) {
var imageEdit = window.imageEdit = {
iasapi : {},
hold : {},
postid : '',
_view : false,
intval : function(f) {
return f | 0;
},
setDisabled : function( el, s ) {
/*
* `el` can be a single form element or a fieldset. Before #28864, the disabled state on
* some text fields was handled targeting $('input', el). Now we need to handle the
* disabled state on buttons too so we can just target `el` regardless if it's a single
* element or a fieldset because when a fieldset is disabled, its descendants are disabled too.
*/
if ( s ) {
el.removeClass( 'disabled' ).prop( 'disabled', false );
} else {
el.addClass( 'disabled' ).prop( 'disabled', true );
}
},
init : function(postid) {
var t = this, old = $('#image-editor-' + t.postid),
x = t.intval( $('#imgedit-x-' + postid).val() ),
y = t.intval( $('#imgedit-y-' + postid).val() );
if ( t.postid !== postid && old.length ) {
t.close(t.postid);
}
t.hold.w = t.hold.ow = x;
t.hold.h = t.hold.oh = y;
t.hold.xy_ratio = x / y;
t.hold.sizer = parseFloat( $('#imgedit-sizer-' + postid).val() );
t.postid = postid;
$('#imgedit-response-' + postid).empty();
$('input[type="text"]', '#imgedit-panel-' + postid).keypress(function(e) {
var k = e.keyCode;
if ( 36 < k && k < 41 ) {
$(this).blur();
}
if ( 13 === k ) {
e.preventDefault();
e.stopPropagation();
return false;
}
});
},
toggleEditor : function(postid, toggle) {
var wait = $('#imgedit-wait-' + postid);
if ( toggle ) {
wait.fadeIn( 'fast' );
} else {
wait.fadeOut('fast');
}
},
toggleHelp : function(el) {
var $el = $( el );
$el
.attr( 'aria-expanded', 'false' === $el.attr( 'aria-expanded' ) ? 'true' : 'false' )
.parents( '.imgedit-group-top' ).toggleClass( 'imgedit-help-toggled' ).find( '.imgedit-help' ).slideToggle( 'fast' );
return false;
},
getTarget : function(postid) {
return $('input[name="imgedit-target-' + postid + '"]:checked', '#imgedit-save-target-' + postid).val() || 'full';
},
scaleChanged : function(postid, x) {
var w = $('#imgedit-scale-width-' + postid), h = $('#imgedit-scale-height-' + postid),
warn = $('#imgedit-scale-warn-' + postid), w1 = '', h1 = '';
if ( x ) {
h1 = ( w.val() !== '' ) ? Math.round( w.val() / this.hold.xy_ratio ) : '';
h.val( h1 );
} else {
w1 = ( h.val() !== '' ) ? Math.round( h.val() * this.hold.xy_ratio ) : '';
w.val( w1 );
}
if ( ( h1 && h1 > this.hold.oh ) || ( w1 && w1 > this.hold.ow ) ) {
warn.css('visibility', 'visible');
} else {
warn.css('visibility', 'hidden');
}
},
getSelRatio : function(postid) {
var x = this.hold.w, y = this.hold.h,
X = this.intval( $('#imgedit-crop-width-' + postid).val() ),
Y = this.intval( $('#imgedit-crop-height-' + postid).val() );
if ( X && Y ) {
return X + ':' + Y;
}
if ( x && y ) {
return x + ':' + y;
}
return '1:1';
},
filterHistory : function(postid, setSize) {
// apply undo state to history
var history = $('#imgedit-history-' + postid).val(), pop, n, o, i, op = [];
if ( history !== '' ) {
history = JSON.parse(history);
pop = this.intval( $('#imgedit-undone-' + postid).val() );
if ( pop > 0 ) {
while ( pop > 0 ) {
history.pop();
pop--;
}
}
if ( setSize ) {
if ( !history.length ) {
this.hold.w = this.hold.ow;
this.hold.h = this.hold.oh;
return '';
}
// restore
o = history[history.length - 1];
o = o.c || o.r || o.f || false;
if ( o ) {
this.hold.w = o.fw;
this.hold.h = o.fh;
}
}
// filter the values
for ( n in history ) {
i = history[n];
if ( i.hasOwnProperty('c') ) {
op[n] = { 'c': { 'x': i.c.x, 'y': i.c.y, 'w': i.c.w, 'h': i.c.h } };
} else if ( i.hasOwnProperty('r') ) {
op[n] = { 'r': i.r.r };
} else if ( i.hasOwnProperty('f') ) {
op[n] = { 'f': i.f.f };
}
}
return JSON.stringify(op);
}
return '';
},
refreshEditor : function(postid, nonce, callback) {
var t = this, data, img;
t.toggleEditor(postid, 1);
data = {
'action': 'imgedit-preview',
'_ajax_nonce': nonce,
'postid': postid,
'history': t.filterHistory(postid, 1),
'rand': t.intval(Math.random() * 1000000)
};
img = $( '<img id="image-preview-' + postid + '" alt="" />' )
.on( 'load', { history: data.history }, function( event ) {
var max1, max2,
parent = $( '#imgedit-crop-' + postid ),
t = imageEdit,
historyObj;
if ( '' !== event.data.history ) {
historyObj = JSON.parse( event.data.history );
// If last executed action in history is a crop action.
if ( historyObj[historyObj.length - 1].hasOwnProperty( 'c' ) ) {
/*
* A crop action has completed and the crop button gets disabled
* ensure the undo button is enabled.
*/
t.setDisabled( $( '#image-undo-' + postid) , true );
// Move focus to the undo button to avoid a focus loss.
$( '#image-undo-' + postid ).focus();
}
}
parent.empty().append(img);
// w, h are the new full size dims
max1 = Math.max( t.hold.w, t.hold.h );
max2 = Math.max( $(img).width(), $(img).height() );
t.hold.sizer = max1 > max2 ? max2 / max1 : 1;
t.initCrop(postid, img, parent);
t.setCropSelection(postid, 0);
if ( (typeof callback !== 'undefined') && callback !== null ) {
callback();
}
if ( $('#imgedit-history-' + postid).val() && $('#imgedit-undone-' + postid).val() === '0' ) {
$('input.imgedit-submit-btn', '#imgedit-panel-' + postid).removeAttr('disabled');
} else {
$('input.imgedit-submit-btn', '#imgedit-panel-' + postid).prop('disabled', true);
}
t.toggleEditor(postid, 0);
})
.on('error', function() {
$('#imgedit-crop-' + postid).empty().append('<div class="error"><p>' + imageEditL10n.error + '</p></div>');
t.toggleEditor(postid, 0);
})
.attr('src', ajaxurl + '?' + $.param(data));
},
action : function(postid, nonce, action) {
var t = this, data, w, h, fw, fh;
if ( t.notsaved(postid) ) {
return false;
}
data = {
'action': 'image-editor',
'_ajax_nonce': nonce,
'postid': postid
};
if ( 'scale' === action ) {
w = $('#imgedit-scale-width-' + postid),
h = $('#imgedit-scale-height-' + postid),
fw = t.intval(w.val()),
fh = t.intval(h.val());
if ( fw < 1 ) {
w.focus();
return false;
} else if ( fh < 1 ) {
h.focus();
return false;
}
if ( fw === t.hold.ow || fh === t.hold.oh ) {
return false;
}
data['do'] = 'scale';
data.fwidth = fw;
data.fheight = fh;
} else if ( 'restore' === action ) {
data['do'] = 'restore';
} else {
return false;
}
t.toggleEditor(postid, 1);
$.post(ajaxurl, data, function(r) {
$('#image-editor-' + postid).empty().append(r);
t.toggleEditor(postid, 0);
// refresh the attachment model so that changes propagate
if ( t._view ) {
t._view.refresh();
}
});
},
save : function(postid, nonce) {
var data,
target = this.getTarget(postid),
history = this.filterHistory(postid, 0),
self = this;
if ( '' === history ) {
return false;
}
this.toggleEditor(postid, 1);
data = {
'action': 'image-editor',
'_ajax_nonce': nonce,
'postid': postid,
'history': history,
'target': target,
'context': $('#image-edit-context').length ? $('#image-edit-context').val() : null,
'do': 'save'
};
$.post(ajaxurl, data, function(r) {
var ret = JSON.parse(r);
if ( ret.error ) {
$('#imgedit-response-' + postid).html('<div class="error"><p>' + ret.error + '</p></div>');
imageEdit.close(postid);
return;
}
if ( ret.fw && ret.fh ) {
$('#media-dims-' + postid).html( ret.fw + ' × ' + ret.fh );
}
if ( ret.thumbnail ) {
$('.thumbnail', '#thumbnail-head-' + postid).attr('src', ''+ret.thumbnail);
}
if ( ret.msg ) {
$('#imgedit-response-' + postid).html('<div class="updated"><p>' + ret.msg + '</p></div>');
}
if ( self._view ) {
self._view.save();
} else {
imageEdit.close(postid);
}
});
},
open : function( postid, nonce, view ) {
this._view = view;
var dfd, data, elem = $('#image-editor-' + postid), head = $('#media-head-' + postid),
btn = $('#imgedit-open-btn-' + postid), spin = btn.siblings('.spinner');
/*
* Instead of disabling the button, which causes a focus loss and makes screen
* readers announce "unavailable", return if the button was already clicked.
*/
if ( btn.hasClass( 'button-activated' ) ) {
return;
}
spin.addClass( 'is-active' );
data = {
'action': 'image-editor',
'_ajax_nonce': nonce,
'postid': postid,
'do': 'open'
};
dfd = $.ajax({
url: ajaxurl,
type: 'post',
data: data,
beforeSend: function() {
btn.addClass( 'button-activated' );
}
}).done(function( html ) {
elem.html( html );
head.fadeOut('fast', function(){
elem.fadeIn('fast');
btn.removeClass( 'button-activated' );
spin.removeClass( 'is-active' );
});
});
return dfd;
},
imgLoaded : function(postid) {
var img = $('#image-preview-' + postid), parent = $('#imgedit-crop-' + postid);
this.initCrop(postid, img, parent);
this.setCropSelection(postid, 0);
this.toggleEditor(postid, 0);
// Editor is ready, move focus to the first focusable element.
$( '.imgedit-wrap .imgedit-help-toggle' ).eq( 0 ).focus();
},
initCrop : function(postid, image, parent) {
var t = this,
selW = $('#imgedit-sel-width-' + postid),
selH = $('#imgedit-sel-height-' + postid),
$img;
t.iasapi = $(image).imgAreaSelect({
parent: parent,
instance: true,
handles: true,
keys: true,
minWidth: 3,
minHeight: 3,
onInit: function( img ) {
// Ensure that the imgareaselect wrapper elements are position:absolute
// (even if we're in a position:fixed modal)
$img = $( img );
$img.next().css( 'position', 'absolute' )
.nextAll( '.imgareaselect-outer' ).css( 'position', 'absolute' );
parent.children().mousedown(function(e){
var ratio = false, sel, defRatio;
if ( e.shiftKey ) {
sel = t.iasapi.getSelection();
defRatio = t.getSelRatio(postid);
ratio = ( sel && sel.width && sel.height ) ? sel.width + ':' + sel.height : defRatio;
}
t.iasapi.setOptions({
aspectRatio: ratio
});
});
},
onSelectStart: function() {
imageEdit.setDisabled($('#imgedit-crop-sel-' + postid), 1);
},
onSelectEnd: function(img, c) {
imageEdit.setCropSelection(postid, c);
},
onSelectChange: function(img, c) {
var sizer = imageEdit.hold.sizer;
selW.val( imageEdit.round(c.width / sizer) );
selH.val( imageEdit.round(c.height / sizer) );
}
});
},
setCropSelection : function(postid, c) {
var sel;
c = c || 0;
if ( !c || ( c.width < 3 && c.height < 3 ) ) {
this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 0);
this.setDisabled($('#imgedit-crop-sel-' + postid), 0);
$('#imgedit-sel-width-' + postid).val('');
$('#imgedit-sel-height-' + postid).val('');
$('#imgedit-selection-' + postid).val('');
return false;
}
sel = { 'x': c.x1, 'y': c.y1, 'w': c.width, 'h': c.height };
this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 1);
$('#imgedit-selection-' + postid).val( JSON.stringify(sel) );
},
close : function(postid, warn) {
warn = warn || false;
if ( warn && this.notsaved(postid) ) {
return false;
}
this.iasapi = {};
this.hold = {};
// If we've loaded the editor in the context of a Media Modal, then switch to the previous view,
// whatever that might have been.
if ( this._view ){
this._view.back();
}
// In case we are not accessing the image editor in the context of a View, close the editor the old-skool way
else {
$('#image-editor-' + postid).fadeOut('fast', function() {
$( '#media-head-' + postid ).fadeIn( 'fast', function() {
// Move focus back to the Edit Image button. Runs also when saving.
$( '#imgedit-open-btn-' + postid ).focus();
});
$(this).empty();
});
}
},
notsaved : function(postid) {
var h = $('#imgedit-history-' + postid).val(),
history = ( h !== '' ) ? JSON.parse(h) : [],
pop = this.intval( $('#imgedit-undone-' + postid).val() );
if ( pop < history.length ) {
if ( confirm( $('#imgedit-leaving-' + postid).html() ) ) {
return false;
}
return true;
}
return false;
},
addStep : function(op, postid, nonce) {
var t = this, elem = $('#imgedit-history-' + postid),
history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : [],
undone = $( '#imgedit-undone-' + postid ),
pop = t.intval( undone.val() );
while ( pop > 0 ) {
history.pop();
pop--;
}
undone.val(0); // reset
history.push(op);
elem.val( JSON.stringify(history) );
t.refreshEditor(postid, nonce, function() {
t.setDisabled($('#image-undo-' + postid), true);
t.setDisabled($('#image-redo-' + postid), false);
});
},
rotate : function(angle, postid, nonce, t) {
if ( $(t).hasClass('disabled') ) {
return false;
}
this.addStep({ 'r': { 'r': angle, 'fw': this.hold.h, 'fh': this.hold.w }}, postid, nonce);
},
flip : function (axis, postid, nonce, t) {
if ( $(t).hasClass('disabled') ) {
return false;
}
this.addStep({ 'f': { 'f': axis, 'fw': this.hold.w, 'fh': this.hold.h }}, postid, nonce);
},
crop : function (postid, nonce, t) {
var sel = $('#imgedit-selection-' + postid).val(),
w = this.intval( $('#imgedit-sel-width-' + postid).val() ),
h = this.intval( $('#imgedit-sel-height-' + postid).val() );
if ( $(t).hasClass('disabled') || sel === '' ) {
return false;
}
sel = JSON.parse(sel);
if ( sel.w > 0 && sel.h > 0 && w > 0 && h > 0 ) {
sel.fw = w;
sel.fh = h;
this.addStep({ 'c': sel }, postid, nonce);
}
},
undo : function (postid, nonce) {
var t = this, button = $('#image-undo-' + postid), elem = $('#imgedit-undone-' + postid),
pop = t.intval( elem.val() ) + 1;
if ( button.hasClass('disabled') ) {
return;
}
elem.val(pop);
t.refreshEditor(postid, nonce, function() {
var elem = $('#imgedit-history-' + postid),
history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : [];
t.setDisabled($('#image-redo-' + postid), true);
t.setDisabled(button, pop < history.length);
// When undo gets disabled, move focus to the redo button to avoid a focus loss.
if ( history.length === pop ) {
$( '#image-redo-' + postid ).focus();
}
});
},
redo : function(postid, nonce) {
var t = this, button = $('#image-redo-' + postid), elem = $('#imgedit-undone-' + postid),
pop = t.intval( elem.val() ) - 1;
if ( button.hasClass('disabled') ) {
return;
}
elem.val(pop);
t.refreshEditor(postid, nonce, function() {
t.setDisabled($('#image-undo-' + postid), true);
t.setDisabled(button, pop > 0);
// When redo gets disabled, move focus to the undo button to avoid a focus loss.
if ( 0 === pop ) {
$( '#image-undo-' + postid ).focus();
}
});
},
setNumSelection : function(postid) {
var sel, elX = $('#imgedit-sel-width-' + postid), elY = $('#imgedit-sel-height-' + postid),
x = this.intval( elX.val() ), y = this.intval( elY.val() ),
img = $('#image-preview-' + postid), imgh = img.height(), imgw = img.width(),
sizer = this.hold.sizer, x1, y1, x2, y2, ias = this.iasapi;
if ( x < 1 ) {
elX.val('');
return false;
}
if ( y < 1 ) {
elY.val('');
return false;
}
if ( x && y && ( sel = ias.getSelection() ) ) {
x2 = sel.x1 + Math.round( x * sizer );
y2 = sel.y1 + Math.round( y * sizer );
x1 = sel.x1;
y1 = sel.y1;
if ( x2 > imgw ) {
x1 = 0;
x2 = imgw;
elX.val( Math.round( x2 / sizer ) );
}
if ( y2 > imgh ) {
y1 = 0;
y2 = imgh;
elY.val( Math.round( y2 / sizer ) );
}
ias.setSelection( x1, y1, x2, y2 );
ias.update();
this.setCropSelection(postid, ias.getSelection());
}
},
round : function(num) {
var s;
num = Math.round(num);
if ( this.hold.sizer > 0.6 ) {
return num;
}
s = num.toString().slice(-1);
if ( '1' === s ) {
return num - 1;
} else if ( '9' === s ) {
return num + 1;
}
return num;
},
setRatioSelection : function(postid, n, el) {
var sel, r, x = this.intval( $('#imgedit-crop-width-' + postid).val() ),
y = this.intval( $('#imgedit-crop-height-' + postid).val() ),
h = $('#image-preview-' + postid).height();
if ( !this.intval( $(el).val() ) ) {
$(el).val('');
return;
}
if ( x && y ) {
this.iasapi.setOptions({
aspectRatio: x + ':' + y
});
if ( sel = this.iasapi.getSelection(true) ) {
r = Math.ceil( sel.y1 + ( ( sel.x2 - sel.x1 ) / ( x / y ) ) );
if ( r > h ) {
r = h;
if ( n ) {
$('#imgedit-crop-height-' + postid).val('');
} else {
$('#imgedit-crop-width-' + postid).val('');
}
}
this.iasapi.setSelection( sel.x1, sel.y1, sel.x2, r );
this.iasapi.update();
}
}
}
};
})(jQuery);