@angular/cdk
Version:
Angular Material Component Development Kit
207 lines • 24.4 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/** Class to be added to the overlay pane wrapper. */
var wrapperClass = 'cdk-global-overlay-wrapper';
/**
* A strategy for positioning overlays. Using this strategy, an overlay is given an
* explicit position relative to the browser's viewport. We use flexbox, instead of
* transforms, in order to avoid issues with subpixel rendering which can cause the
* element to become blurry.
*/
var GlobalPositionStrategy = /** @class */ (function () {
function GlobalPositionStrategy() {
this._cssPosition = 'static';
this._topOffset = '';
this._bottomOffset = '';
this._leftOffset = '';
this._rightOffset = '';
this._alignItems = '';
this._justifyContent = '';
this._width = '';
this._height = '';
}
GlobalPositionStrategy.prototype.attach = function (overlayRef) {
var config = overlayRef.getConfig();
this._overlayRef = overlayRef;
if (this._width && !config.width) {
overlayRef.updateSize({ width: this._width });
}
if (this._height && !config.height) {
overlayRef.updateSize({ height: this._height });
}
overlayRef.hostElement.classList.add(wrapperClass);
this._isDisposed = false;
};
/**
* Sets the top position of the overlay. Clears any previously set vertical position.
* @param value New top offset.
*/
GlobalPositionStrategy.prototype.top = function (value) {
if (value === void 0) { value = ''; }
this._bottomOffset = '';
this._topOffset = value;
this._alignItems = 'flex-start';
return this;
};
/**
* Sets the left position of the overlay. Clears any previously set horizontal position.
* @param value New left offset.
*/
GlobalPositionStrategy.prototype.left = function (value) {
if (value === void 0) { value = ''; }
this._rightOffset = '';
this._leftOffset = value;
this._justifyContent = 'flex-start';
return this;
};
/**
* Sets the bottom position of the overlay. Clears any previously set vertical position.
* @param value New bottom offset.
*/
GlobalPositionStrategy.prototype.bottom = function (value) {
if (value === void 0) { value = ''; }
this._topOffset = '';
this._bottomOffset = value;
this._alignItems = 'flex-end';
return this;
};
/**
* Sets the right position of the overlay. Clears any previously set horizontal position.
* @param value New right offset.
*/
GlobalPositionStrategy.prototype.right = function (value) {
if (value === void 0) { value = ''; }
this._leftOffset = '';
this._rightOffset = value;
this._justifyContent = 'flex-end';
return this;
};
/**
* Sets the overlay width and clears any previously set width.
* @param value New width for the overlay
* @deprecated Pass the `width` through the `OverlayConfig`.
* @breaking-change 8.0.0
*/
GlobalPositionStrategy.prototype.width = function (value) {
if (value === void 0) { value = ''; }
if (this._overlayRef) {
this._overlayRef.updateSize({ width: value });
}
else {
this._width = value;
}
return this;
};
/**
* Sets the overlay height and clears any previously set height.
* @param value New height for the overlay
* @deprecated Pass the `height` through the `OverlayConfig`.
* @breaking-change 8.0.0
*/
GlobalPositionStrategy.prototype.height = function (value) {
if (value === void 0) { value = ''; }
if (this._overlayRef) {
this._overlayRef.updateSize({ height: value });
}
else {
this._height = value;
}
return this;
};
/**
* Centers the overlay horizontally with an optional offset.
* Clears any previously set horizontal position.
*
* @param offset Overlay offset from the horizontal center.
*/
GlobalPositionStrategy.prototype.centerHorizontally = function (offset) {
if (offset === void 0) { offset = ''; }
this.left(offset);
this._justifyContent = 'center';
return this;
};
/**
* Centers the overlay vertically with an optional offset.
* Clears any previously set vertical position.
*
* @param offset Overlay offset from the vertical center.
*/
GlobalPositionStrategy.prototype.centerVertically = function (offset) {
if (offset === void 0) { offset = ''; }
this.top(offset);
this._alignItems = 'center';
return this;
};
/**
* Apply the position to the element.
* @docs-private
*/
GlobalPositionStrategy.prototype.apply = function () {
// Since the overlay ref applies the strategy asynchronously, it could
// have been disposed before it ends up being applied. If that is the
// case, we shouldn't do anything.
if (!this._overlayRef || !this._overlayRef.hasAttached()) {
return;
}
var styles = this._overlayRef.overlayElement.style;
var parentStyles = this._overlayRef.hostElement.style;
var config = this._overlayRef.getConfig();
var width = config.width, height = config.height, maxWidth = config.maxWidth, maxHeight = config.maxHeight;
var shouldBeFlushHorizontally = (width === '100%' || width === '100vw') &&
(!maxWidth || maxWidth === '100%' || maxWidth === '100vw');
var shouldBeFlushVertically = (height === '100%' || height === '100vh') &&
(!maxHeight || maxHeight === '100%' || maxHeight === '100vh');
styles.position = this._cssPosition;
styles.marginLeft = shouldBeFlushHorizontally ? '0' : this._leftOffset;
styles.marginTop = shouldBeFlushVertically ? '0' : this._topOffset;
styles.marginBottom = this._bottomOffset;
styles.marginRight = this._rightOffset;
if (shouldBeFlushHorizontally) {
parentStyles.justifyContent = 'flex-start';
}
else if (this._justifyContent === 'center') {
parentStyles.justifyContent = 'center';
}
else if (this._overlayRef.getConfig().direction === 'rtl') {
// In RTL the browser will invert `flex-start` and `flex-end` automatically, but we
// don't want that because our positioning is explicitly `left` and `right`, hence
// why we do another inversion to ensure that the overlay stays in the same position.
// TODO: reconsider this if we add `start` and `end` methods.
if (this._justifyContent === 'flex-start') {
parentStyles.justifyContent = 'flex-end';
}
else if (this._justifyContent === 'flex-end') {
parentStyles.justifyContent = 'flex-start';
}
}
else {
parentStyles.justifyContent = this._justifyContent;
}
parentStyles.alignItems = shouldBeFlushVertically ? 'flex-start' : this._alignItems;
};
/**
* Cleans up the DOM changes from the position strategy.
* @docs-private
*/
GlobalPositionStrategy.prototype.dispose = function () {
if (this._isDisposed || !this._overlayRef) {
return;
}
var styles = this._overlayRef.overlayElement.style;
var parent = this._overlayRef.hostElement;
var parentStyles = parent.style;
parent.classList.remove(wrapperClass);
parentStyles.justifyContent = parentStyles.alignItems = styles.marginTop =
styles.marginBottom = styles.marginLeft = styles.marginRight = styles.position = '';
this._overlayRef = null;
this._isDisposed = true;
};
return GlobalPositionStrategy;
}());
export { GlobalPositionStrategy };
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {PositionStrategy} from './position-strategy';\nimport {OverlayReference} from '../overlay-reference';\n\n/** Class to be added to the overlay pane wrapper. */\nconst wrapperClass = 'cdk-global-overlay-wrapper';\n\n/**\n * A strategy for positioning overlays. Using this strategy, an overlay is given an\n * explicit position relative to the browser's viewport. We use flexbox, instead of\n * transforms, in order to avoid issues with subpixel rendering which can cause the\n * element to become blurry.\n */\nexport class GlobalPositionStrategy implements PositionStrategy {\n  /** The overlay to which this strategy is attached. */\n  private _overlayRef: OverlayReference;\n  private _cssPosition: string = 'static';\n  private _topOffset: string = '';\n  private _bottomOffset: string = '';\n  private _leftOffset: string = '';\n  private _rightOffset: string = '';\n  private _alignItems: string = '';\n  private _justifyContent: string = '';\n  private _width: string = '';\n  private _height: string = '';\n  private _isDisposed: boolean;\n\n  attach(overlayRef: OverlayReference): void {\n    const config = overlayRef.getConfig();\n\n    this._overlayRef = overlayRef;\n\n    if (this._width && !config.width) {\n      overlayRef.updateSize({width: this._width});\n    }\n\n    if (this._height && !config.height) {\n      overlayRef.updateSize({height: this._height});\n    }\n\n    overlayRef.hostElement.classList.add(wrapperClass);\n    this._isDisposed = false;\n  }\n\n  /**\n   * Sets the top position of the overlay. Clears any previously set vertical position.\n   * @param value New top offset.\n   */\n  top(value: string = ''): this {\n    this._bottomOffset = '';\n    this._topOffset = value;\n    this._alignItems = 'flex-start';\n    return this;\n  }\n\n  /**\n   * Sets the left position of the overlay. Clears any previously set horizontal position.\n   * @param value New left offset.\n   */\n  left(value: string = ''): this {\n    this._rightOffset = '';\n    this._leftOffset = value;\n    this._justifyContent = 'flex-start';\n    return this;\n  }\n\n  /**\n   * Sets the bottom position of the overlay. Clears any previously set vertical position.\n   * @param value New bottom offset.\n   */\n  bottom(value: string = ''): this {\n    this._topOffset = '';\n    this._bottomOffset = value;\n    this._alignItems = 'flex-end';\n    return this;\n  }\n\n  /**\n   * Sets the right position of the overlay. Clears any previously set horizontal position.\n   * @param value New right offset.\n   */\n  right(value: string = ''): this {\n    this._leftOffset = '';\n    this._rightOffset = value;\n    this._justifyContent = 'flex-end';\n    return this;\n  }\n\n  /**\n   * Sets the overlay width and clears any previously set width.\n   * @param value New width for the overlay\n   * @deprecated Pass the `width` through the `OverlayConfig`.\n   * @breaking-change 8.0.0\n   */\n  width(value: string = ''): this {\n    if (this._overlayRef) {\n      this._overlayRef.updateSize({width: value});\n    } else {\n      this._width = value;\n    }\n\n    return this;\n  }\n\n  /**\n   * Sets the overlay height and clears any previously set height.\n   * @param value New height for the overlay\n   * @deprecated Pass the `height` through the `OverlayConfig`.\n   * @breaking-change 8.0.0\n   */\n  height(value: string = ''): this {\n    if (this._overlayRef) {\n      this._overlayRef.updateSize({height: value});\n    } else {\n      this._height = value;\n    }\n\n    return this;\n  }\n\n  /**\n   * Centers the overlay horizontally with an optional offset.\n   * Clears any previously set horizontal position.\n   *\n   * @param offset Overlay offset from the horizontal center.\n   */\n  centerHorizontally(offset: string = ''): this {\n    this.left(offset);\n    this._justifyContent = 'center';\n    return this;\n  }\n\n  /**\n   * Centers the overlay vertically with an optional offset.\n   * Clears any previously set vertical position.\n   *\n   * @param offset Overlay offset from the vertical center.\n   */\n  centerVertically(offset: string = ''): this {\n    this.top(offset);\n    this._alignItems = 'center';\n    return this;\n  }\n\n  /**\n   * Apply the position to the element.\n   * @docs-private\n   */\n  apply(): void {\n    // Since the overlay ref applies the strategy asynchronously, it could\n    // have been disposed before it ends up being applied. If that is the\n    // case, we shouldn't do anything.\n    if (!this._overlayRef || !this._overlayRef.hasAttached()) {\n      return;\n    }\n\n    const styles = this._overlayRef.overlayElement.style;\n    const parentStyles = this._overlayRef.hostElement.style;\n    const config = this._overlayRef.getConfig();\n    const {width, height, maxWidth, maxHeight} = config;\n    const shouldBeFlushHorizontally = (width === '100%' || width === '100vw') &&\n                                      (!maxWidth || maxWidth === '100%' || maxWidth === '100vw');\n    const shouldBeFlushVertically = (height === '100%' || height === '100vh') &&\n                                    (!maxHeight || maxHeight === '100%' || maxHeight === '100vh');\n\n    styles.position = this._cssPosition;\n    styles.marginLeft = shouldBeFlushHorizontally ? '0' : this._leftOffset;\n    styles.marginTop = shouldBeFlushVertically ? '0' : this._topOffset;\n    styles.marginBottom = this._bottomOffset;\n    styles.marginRight = this._rightOffset;\n\n    if (shouldBeFlushHorizontally) {\n      parentStyles.justifyContent = 'flex-start';\n    } else if (this._justifyContent === 'center') {\n      parentStyles.justifyContent = 'center';\n    } else if (this._overlayRef.getConfig().direction === 'rtl') {\n      // In RTL the browser will invert `flex-start` and `flex-end` automatically, but we\n      // don't want that because our positioning is explicitly `left` and `right`, hence\n      // why we do another inversion to ensure that the overlay stays in the same position.\n      // TODO: reconsider this if we add `start` and `end` methods.\n      if (this._justifyContent === 'flex-start') {\n        parentStyles.justifyContent = 'flex-end';\n      } else if (this._justifyContent === 'flex-end') {\n        parentStyles.justifyContent = 'flex-start';\n      }\n    } else {\n      parentStyles.justifyContent = this._justifyContent;\n    }\n\n    parentStyles.alignItems = shouldBeFlushVertically ? 'flex-start' : this._alignItems;\n  }\n\n  /**\n   * Cleans up the DOM changes from the position strategy.\n   * @docs-private\n   */\n  dispose(): void {\n    if (this._isDisposed || !this._overlayRef) {\n      return;\n    }\n\n    const styles = this._overlayRef.overlayElement.style;\n    const parent = this._overlayRef.hostElement;\n    const parentStyles = parent.style;\n\n    parent.classList.remove(wrapperClass);\n    parentStyles.justifyContent = parentStyles.alignItems = styles.marginTop =\n      styles.marginBottom = styles.marginLeft = styles.marginRight = styles.position = '';\n\n    this._overlayRef = null!;\n    this._isDisposed = true;\n  }\n}\n"]}