mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-16 02:51:50 +00:00
411 lines
11 KiB
JavaScript
411 lines
11 KiB
JavaScript
/**
|
|
* Creates an es.SurfaceView object.
|
|
*
|
|
* @class
|
|
* @constructor
|
|
* @param {jQuery} $container DOM Container to render surface into
|
|
* @param {es.SurfaceModel} model Surface model to view
|
|
*/
|
|
es.SurfaceView = function( $container, model ) {
|
|
this.$ = $container.addClass( 'es-surfaceView' );
|
|
this.$window = $( window );
|
|
this.model = model;
|
|
|
|
// Initialize document view
|
|
this.documentView = new es.DocumentView( this.model.getDocument(), this );
|
|
this.$.append( this.documentView.$ );
|
|
|
|
// Interaction state
|
|
this.mouse = {
|
|
selecting: false,
|
|
timer: null,
|
|
delta: 0,
|
|
clickTime: 0,
|
|
clickPosition: null
|
|
};
|
|
this.cursor = {
|
|
$: $( '<div class="es-surfaceView-cursor"></div>' ).appendTo( this.$ ),
|
|
interval: null,
|
|
initialLeft: null,
|
|
initialBias: false
|
|
};
|
|
this.keyboard = {
|
|
selecting: false,
|
|
cursorAnchor: null,
|
|
keydownTimeout: null,
|
|
keys: {
|
|
shift: false,
|
|
control: false,
|
|
command: false,
|
|
alt: false
|
|
}
|
|
};
|
|
this.selection = new es.Range();
|
|
|
|
// References for use in closures
|
|
var surfaceView = this,
|
|
$document = $( document );
|
|
|
|
// MouseDown and DoubleClick on surface
|
|
this.$.on( {
|
|
'mousedown' : function(e) {
|
|
return surfaceView.onMouseDown( e );
|
|
}
|
|
} );
|
|
|
|
// Hidden input
|
|
this.$input = $( '<textarea class="es-surfaceView-textarea" />' )
|
|
.prependTo( this.$ )
|
|
.on( {
|
|
'focus' : function() {
|
|
//console.log("focus");
|
|
$document.off( '.es-surfaceView' );
|
|
$document.on({
|
|
'mousemove.es-surfaceView': function(e) {
|
|
return surfaceView.onMouseMove( e );
|
|
},
|
|
'mouseup.es-surfaceView': function(e) {
|
|
return surfaceView.onMouseUp( e );
|
|
},
|
|
'keydown.es-surfaceView': function( e ) {
|
|
return surfaceView.onKeyDown( e );
|
|
},
|
|
'keyup.es-surfaceView': function( e ) {
|
|
return surfaceView.onKeyUp( e );
|
|
}
|
|
});
|
|
},
|
|
'blur': function( e ) {
|
|
//console.log("blur");
|
|
$document.off( '.es-surfaceView' );
|
|
surfaceView.hideCursor();
|
|
}
|
|
} ).focus();
|
|
|
|
// First render
|
|
this.documentView.renderContent();
|
|
|
|
this.dimensions = {
|
|
width: this.$.width(),
|
|
height: this.$window.height(),
|
|
scrollTop: this.$window.scrollTop()
|
|
};
|
|
|
|
// Re-render when resizing horizontally
|
|
this.$window.resize( function() {
|
|
surfaceView.hideCursor();
|
|
surfaceView.dimensions.height = surfaceView.$window.height();
|
|
var width = surfaceView.$.width();
|
|
if ( surfaceView.dimensions.width !== width ) {
|
|
surfaceView.dimensions.width = width;
|
|
surfaceView.documentView.renderContent();
|
|
}
|
|
} );
|
|
|
|
this.$window.scroll( function() {
|
|
surfaceView.dimensions.scrollTop = surfaceView.$window.scrollTop();
|
|
} );
|
|
|
|
this.documentView.on('update', function() {alert(1);});
|
|
};
|
|
|
|
es.SurfaceView.prototype.onMouseDown = function( e ) {
|
|
if ( e.button === 0 ) {
|
|
switch ( e.originalEvent.detail ) {
|
|
case 1: // single click
|
|
this.mouse.selecting = true;
|
|
this.selection.to = this.documentView.getOffsetFromEvent( e );
|
|
if ( this.keyboard.keys.shift ) {
|
|
this.documentView.drawSelection( this.selection );
|
|
this.hideCursor();
|
|
} else {
|
|
this.documentView.clearSelection();
|
|
this.selection.from = this.selection.to;
|
|
var position = es.Position.newFromEventPagePosition( e ),
|
|
nodeView = this.documentView.getNodeFromOffset( this.selection.to, false );
|
|
this.cursor.initialBias = position.left > nodeView.$.offset().left;
|
|
this.showCursor();
|
|
}
|
|
break;
|
|
case 2: // double click
|
|
this.selection = this.documentView.model.getWordBoundaries(
|
|
this.documentView.getOffsetFromEvent( e )
|
|
);
|
|
this.documentView.drawSelection( this.selection );
|
|
this.hideCursor();
|
|
break;
|
|
break;
|
|
default: // 3 and more
|
|
var node = this.documentView.getNodeFromOffset(
|
|
this.documentView.getOffsetFromEvent( e )
|
|
);
|
|
this.selection.from = this.documentView.getOffsetFromNode( node, false );
|
|
this.selection.to = this.selection.from + node.getElementLength() - 1;
|
|
this.documentView.drawSelection( this.selection );
|
|
this.hideCursor();
|
|
break;
|
|
}
|
|
}
|
|
if ( !this.$input.is( ':focus' ) ) {
|
|
this.$input.focus().select();
|
|
}
|
|
this.cursor.initialLeft = null;
|
|
return false;
|
|
};
|
|
|
|
es.SurfaceView.prototype.onMouseMove = function( e ) {
|
|
if ( e.button === 0 /* left mouse button */ && this.mouse.selecting ) {
|
|
this.selection.to = this.documentView.getOffsetFromEvent( e );
|
|
this.documentView.drawSelection( this.selection );
|
|
if ( this.selection.getLength() ) {
|
|
this.hideCursor();
|
|
}
|
|
}
|
|
};
|
|
|
|
es.SurfaceView.prototype.onMouseUp = function( e ) {
|
|
if ( e.button === 0 /* left mouse button */ ) {
|
|
this.mouse.selecting = false;
|
|
}
|
|
};
|
|
|
|
es.SurfaceView.prototype.onKeyDown = function( e ) {
|
|
switch ( e.keyCode ) {
|
|
case 16: // Shift
|
|
this.keyboard.keys.shift = true;
|
|
this.keyboard.selecting = true;
|
|
break;
|
|
case 17: // Control
|
|
this.keyboard.keys.control = true;
|
|
break;
|
|
case 18: // Alt
|
|
this.keyboard.keys.alt = true;
|
|
break;
|
|
case 91: // Left Command in WebKit
|
|
case 93: // Right Command in WebKit
|
|
case 224: // Command in FireFox
|
|
this.keyboard.keys.command = true;
|
|
break;
|
|
case 36: // Home
|
|
this.moveCursor( 'home' );
|
|
break;
|
|
case 35: // End
|
|
this.moveCursor( 'end' );
|
|
break;
|
|
case 37: // Left arrow
|
|
if ( this.keyboard.keys.command ) {
|
|
this.moveCursor( 'home' );
|
|
} else {
|
|
this.moveCursor( 'left' );
|
|
}
|
|
break;
|
|
case 38: // Up arrow
|
|
this.moveCursor( 'up' );
|
|
break;
|
|
case 39: // Right arrow
|
|
if ( this.keyboard.keys.command ) {
|
|
this.moveCursor( 'end' );
|
|
} else {
|
|
this.moveCursor( 'right' );
|
|
}
|
|
break;
|
|
case 40: // Down arrow
|
|
this.moveCursor( 'down' );
|
|
break;
|
|
case 8: // Backspace
|
|
var transaction = this.documentView.model.prepareRemoval( new es.Range( this.selection.to, this.selection.to - 1 ) );
|
|
this.documentView.model.commit ( transaction );
|
|
this.selection.from = this.selection.to -= 1;
|
|
this.showCursor();
|
|
break;
|
|
case 46: // Delete
|
|
var transaction = this.documentView.model.prepareRemoval( new es.Range( this.selection.to, this.selection.to + 1 ) );
|
|
this.documentView.model.commit ( transaction );
|
|
break;
|
|
default: // Insert content (maybe)
|
|
if ( this.keyboard.keydownTimeout ) {
|
|
clearTimeout( this.keyboard.keydownTimeout );
|
|
}
|
|
var surface = this;
|
|
this.keyboard.keydownTimeout = setTimeout( function () {
|
|
surface.insertFromInput();
|
|
}, 10 );
|
|
break;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
es.SurfaceView.prototype.insertFromInput = function() {
|
|
var val = this.$input.val();
|
|
this.$input.val( '' );
|
|
if ( val.length > 0 ) {
|
|
var transaction = this.documentView.model.prepareInsertion( this.selection.to, val.split('') );
|
|
this.documentView.model.commit ( transaction );
|
|
this.selection.from = this.selection.to += val.length;
|
|
this.showCursor();
|
|
}
|
|
};
|
|
|
|
es.SurfaceView.prototype.onKeyUp = function( e ) {
|
|
switch ( e.keyCode ) {
|
|
case 16: // Shift
|
|
this.keyboard.keys.shift = false;
|
|
if ( this.keyboard.selecting ) {
|
|
this.keyboard.selecting = false;
|
|
}
|
|
break;
|
|
case 17: // Control
|
|
this.keyboard.keys.control = false;
|
|
break;
|
|
case 18: // Alt
|
|
this.keyboard.keys.alt = false;
|
|
break;
|
|
case 91: // Left Command in WebKit
|
|
case 93: // Right Command in WebKit
|
|
case 224: // Command in FireFox
|
|
this.keyboard.keys.command = false;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
es.SurfaceView.prototype.moveCursor = function( instruction ) {
|
|
this.selection.normalize();
|
|
|
|
if ( instruction !== 'up' && instruction !== 'down' ) {
|
|
this.cursor.initialLeft = null;
|
|
}
|
|
|
|
var newTo;
|
|
|
|
switch ( instruction ) {
|
|
case 'left' :
|
|
case 'right' :
|
|
var offset;
|
|
if ( this.keyboard.keys.shift ) {
|
|
offset = this.selection.to;
|
|
} else {
|
|
offset = this.selection.from === this.selection.to ?
|
|
this.selection.to :
|
|
instruction === 'left' ? this.selection.start : this.selection.end;
|
|
}
|
|
newTo = this.documentView.getModel().getRelativeContentOffset(
|
|
offset,
|
|
instruction === 'left' ? -1 : 1
|
|
);
|
|
break;
|
|
case 'home' :
|
|
case 'end' :
|
|
var range = this.documentView.getRenderedLineRangeFromOffset(
|
|
this.cursor.initialBias ?
|
|
this.documentView.getModel().getRelativeContentOffset( this.selection.to, -1 ) :
|
|
this.selection.to
|
|
);
|
|
newTo = instruction === 'home' ? range.start : range.end;
|
|
break;
|
|
case 'up' :
|
|
case 'down' :
|
|
/*
|
|
* Looks for the in-document character position that would match up with the same
|
|
* horizontal position - jumping a few pixels up/down at a time until we reach
|
|
* the next/previous line
|
|
*/
|
|
|
|
var position = this.documentView.getRenderedPositionFromOffset( this.selection.to );
|
|
if ( this.cursor.initialLeft === null ) {
|
|
this.cursor.initialLeft = position.left;
|
|
}
|
|
var fakePosition = new es.Position( this.cursor.initialLeft, position.top ),
|
|
i = 0,
|
|
step = instruction === 'up' ? -5 : 5,
|
|
top = this.$.position().top;
|
|
do {
|
|
fakePosition.top += ++i * step;
|
|
if ( fakePosition.top < top ) {
|
|
this.cursor.initialLeft = null;
|
|
fakePosition.top = fakePosition.left = 0;
|
|
break;
|
|
} else if ( fakePosition.top > top + this.dimensions.height + this.dimensions.scrollTop ) {
|
|
this.cursor.initialLeft = null;
|
|
fakePosition.left = this.dimensions.width;
|
|
break;
|
|
}
|
|
fakePosition = this.documentView.getRenderedPositionFromOffset(
|
|
this.documentView.getOffsetFromRenderedPosition( fakePosition )
|
|
);
|
|
fakePosition.left = this.cursor.initialLeft;
|
|
} while ( position.top === fakePosition.top );
|
|
newTo = this.documentView.getOffsetFromRenderedPosition( fakePosition );
|
|
break;
|
|
}
|
|
|
|
|
|
if( instruction === 'end' ) {
|
|
this.cursor.initialBias = true;
|
|
} else {
|
|
this.cursor.initialBias = false;
|
|
}
|
|
|
|
if ( this.keyboard.keys.shift ) {
|
|
this.selection.to = newTo;
|
|
if ( this.selection.from !== this.selection.to ) {
|
|
this.documentView.drawSelection( this.selection );
|
|
this.hideCursor();
|
|
} else {
|
|
this.documentView.clearSelection();
|
|
this.showCursor();
|
|
}
|
|
} else {
|
|
if ( this.selection.from !== this.selection.to ) {
|
|
this.documentView.clearSelection();
|
|
}
|
|
this.selection.from = this.selection.to = newTo;
|
|
this.showCursor();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Shows the cursor in a new position.
|
|
*
|
|
* @method
|
|
* @param offset {Integer} Position to show the cursor at
|
|
*/
|
|
es.SurfaceView.prototype.showCursor = function() {
|
|
var position = this.documentView.getRenderedPositionFromOffset(
|
|
this.selection.to, this.cursor.initialBias
|
|
);
|
|
this.cursor.$.css( {
|
|
'left': position.left,
|
|
'top': position.top,
|
|
'height': position.bottom - position.top
|
|
} ).show();
|
|
this.$input.css({
|
|
'top': position.top,
|
|
'height': position.bottom - position.top
|
|
});
|
|
|
|
// cursor blinking
|
|
if ( this.cursor.interval ) {
|
|
clearInterval( this.cursor.interval );
|
|
}
|
|
this.cursor.interval = setInterval( function( surface ) {
|
|
surface.cursor.$.css( 'display', function( index, value ) {
|
|
return value === 'block' ? 'none' : 'block';
|
|
} );
|
|
}, 500, this );
|
|
};
|
|
|
|
/**
|
|
* Hides the cursor.
|
|
*
|
|
* @method
|
|
*/
|
|
es.SurfaceView.prototype.hideCursor = function() {
|
|
if( this.cursor.interval ) {
|
|
clearInterval( this.cursor.interval );
|
|
}
|
|
this.cursor.$.hide();
|
|
};
|