mediawiki-extensions-Visual.../modules/ve/ui/ve.ui.Context.js

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/**
* Creates an ve.ui.Context object.
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*
* @class
* @constructor
* @param {jQuery} $overlay DOM selection to add nodes to
*/
ve.ui.Context = function( surfaceView, $overlay ) {
// Inheritance
if ( !surfaceView ) {
return;
}
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// Properties
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this.surfaceView = surfaceView;
this.surfaceView.attachContextView( this );
this.inspectors = {};
this.inspector = null;
this.position = null;
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this.$ = $( '<div class="es-contextView"></div>' ).appendTo( $overlay || $( 'body' ) );
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this.$toolbar = $( '<div class="es-contextView-toolbar"></div>' );
this.$inspectors = $( '<div class="es-contextView-inspectors"></div>' ).appendTo( this.$ );
this.$icon = $( '<div class="es-contextView-icon"></div>' ).appendTo( this.$ );
this.toolbarView = new ve.ui.Toolbar(
this.$toolbar,
this.surfaceView,
[{ 'name': 'textStyle', 'items' : [ 'bold', 'italic', 'link', 'clear' ] }]
);
this.menuView = new ve.ui.Menu( [
// Example menu items
{ 'name': 'tools', '$': this.$toolbar }
],
null,
this.$
);
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// Events
var _this = this;
this.$icon.bind( {
'mousedown': function( e ) {
if ( e.which === 1 ) {
e.preventDefault();
return false;
}
},
'mouseup': function( e ) {
if ( e.which === 1 ) {
if ( _this.inspector ) {
_this.closeInspector();
} else {
if ( _this.isMenuOpen() ) {
_this.closeMenu();
} else {
_this.openMenu();
}
}
}
}
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} );
// Intitialization
this.addInspector( 'link', new ve.ui.LinkInspector( this.toolbarView, this ) );
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};
/* Methods */
ve.ui.Context.prototype.getSurfaceView = function() {
return this.surfaceView;
};
ve.ui.Context.prototype.openMenu = function() {
this.menuView.open();
};
ve.ui.Context.prototype.closeMenu = function() {
this.menuView.close();
};
ve.ui.Context.prototype.isMenuOpen = function() {
return this.menuView.isOpen();
};
ve.ui.Context.prototype.set = function() {
this.positionIcon();
if ( this.position ) {
this.positionOverlay( this.menuView.$ );
if ( this.inspector ) {
this.positionOverlay( this.inspectors[this.inspector].$ );
}
}
};
ve.ui.Context.prototype.positionIcon = function() {
this.$.removeClass( 'es-contextView-position-start es-contextView-position-end' );
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var selection = this.surfaceView.getModel().getSelection(),
selectionRect = this.surfaceView.getSelectionRect();
this.position = null;
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if ( selection.from < selection.to ) {
this.position = new ve.Position( selectionRect.right, selectionRect.bottom );
this.$.addClass( 'es-contextView-position-end' );
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} else if ( selection.from > selection.to ) {
this.position = new ve.Position( selectionRect.left, selectionRect.top );
this.$.addClass( 'es-contextView-position-start' );
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}
if ( this.position ) {
this.$.css( { 'left': this.position.left, 'top': this.position.top } );
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this.$icon.fadeIn( 'fast' );
} else {
this.$icon.hide();
}
};
ve.ui.Context.prototype.positionOverlay = function( $overlay ) {
this.$.removeClass( 'es-contextView-position-below es-contextView-position-above' );
var overlayMargin = 5,
overlayWidth = $overlay.outerWidth(),
overlayHeight = $overlay.outerHeight(),
$window = $( window ),
windowWidth = $window.width(),
windowHeight = $window.height(),
windowScrollTop = $window.scrollTop();
// Center align overlay
var overlayLeft = -Math.round( overlayWidth / 2 );
// Adjust overlay left or right depending on viewport
if ( ( this.position.left - overlayMargin ) + overlayLeft < 0 ) {
// Move right a bit past center
overlayLeft -= this.position.left + overlayLeft - overlayMargin;
} else if ( ( overlayMargin + this.position.left ) - overlayLeft > windowWidth ) {
// Move left a bit past center
overlayLeft += windowWidth - overlayMargin - ( this.position.left - overlayLeft );
}
$overlay.css( 'left', overlayLeft );
// Position overlay on top or bottom depending on viewport
if ( this.position.top + overlayHeight + ( overlayMargin * 2 ) < windowHeight + windowScrollTop ) {
this.$.addClass( 'es-contextView-position-below' );
} else {
this.$.addClass( 'es-contextView-position-above' );
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}
};
ve.ui.Context.prototype.clear = function() {
if ( this.inspector ) {
this.closeInspector();
}
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this.$icon.hide();
this.menuView.close();
};
ve.ui.Context.prototype.openInspector = function( name ) {
if ( !( name in this.inspectors ) ) {
throw 'Missing inspector error. Can not open nonexistent inspector: ' + name;
}
this.inspectors[name].open();
this.$inspectors.show();
this.positionOverlay( this.inspectors[name].$ );
this.inspector = name;
};
ve.ui.Context.prototype.closeInspector = function( accept ) {
if ( this.inspector ) {
this.inspectors[this.inspector].close( accept );
this.$inspectors.hide();
this.inspector = null;
}
};
ve.ui.Context.prototype.getInspector = function( name ) {
if ( name in this.inspectors ) {
return this.inspectors[name];
}
return null;
};
ve.ui.Context.prototype.addInspector = function( name, inspector ) {
if ( name in this.inspectors ) {
throw 'Duplicate inspector error. Previous registration with the same name: ' + name;
}
this.inspectors[name] = inspector;
this.$inspectors.append( inspector.$ );
};
ve.ui.Context.prototype.removeInspector = function( name ) {
if ( name in this.inspectors ) {
throw 'Missing inspector error. Can not remove nonexistent inspector: ' + name;
}
this.inspectors[name].detach();
delete this.inspectors[name];
this.inspector = null;
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};